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npte memorization > Muscles > Flashcards

Muscles Flashcards

"pertinent" innervations, origins, insertions, and actions

1
Q

Trapezius Origin and Insertion

A

Origin: Superior nuchal line of occipital bone and spinous processes of C7-T12
Insertion: Lateral 1/3 of clavicle, acromion, spine of scapula

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2
Q

Trapezius Innervation

A

Accessory Nerve (CN XI)

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3
Q

Trapezius Actions

A

Elevates, retracts, and rotates scapula; lower fibers depress scapula

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4
Q

Latissimus Dorsi Origin and Insertion

A

Origin: spinous processes of T7-L5, thoracolumbar fascia, iliac crest, and last 3 ribs
Insertion: Humerus (intertubercular sulcus)

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5
Q

Latissimus Dorsi Innervation

A

Thoracodorsal nerve (C6-C8)

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6
Q

Latissimus Dorsi Actions

A

Extends, adducts, and medially rotates humerus at shoulder

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7
Q

Levator Scapulae Origins and Insertions

A

Origin: posterior tubercles of transverse processes of C1-C4
Insertion: medial border of scapula from superior angle to spine

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8
Q

Levator Scapulae Innervation

A

Dorsal scapular nerve and ventral rami of C3-C4

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9
Q

Levator Scapulae Actions

A

elevates scapula medially

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10
Q

Rhomboid Minor Origin and Insertion

A

Origin: nuchal ligament, spines of C7+T1 vertebrae
Insertion: medial border of scapula, spine of scapula

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11
Q

Rhomboid Minor Innervation

A

Dorsal scapular nerve (C4-C5)

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12
Q

Rhomboid Minor Actions

A

retract, elevate, and rotate scapula

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13
Q

Rhomboid Major Origin and Insertion

A

Origin: Spinous processes of T2-T5 vertebrae
Insertion: medial border of scapula; below base of spine of scapula

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14
Q

Rhomboid Major Innervation

A

Dorsal Scapular Nerve (C4-C5)

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15
Q

Rhomboid Major Action

A

retract, elevate, and rotate scapula

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16
Q

Splenius Capitis Origin and Insertion

A

Origin: nuchal ligament, spinous processes of C7-T3
Insertion: mastoid process of temporal bone and lateral third of superior nuchal line

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17
Q

Splenius Capitis Actions (bilateral and unilateral!)

A

Bilateral: extend head
Unilateral: ipsilateral side bend and rotation

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18
Q

Splenius Cervicis Origin and Insertion

A

Origin: spinous processes of T3-T6
Insertion: transverse processes of C1-C3

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19
Q

Splenius Cervicis Innervation

A

Dorsal rami of lower cervical nerves

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20
Q

Splenius Cervicis Action (bilateral and unilateral!)

A

Bilateral: extend neck
Unilateral: ipsilateral sidebend and rotation

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21
Q

Erector Spinae Origin and Insertion
Note: insertions for iliocostalis, longissimus, and spinalis

A

Origin: posterior sacrum, iliac crest, spinous processes of lower lumbar and sacral vertebrae
Insertion:
Iliocostalis: angles of lower ribs and cervical transverse processes
Longissimus: between tubercles and angles of ribs, transverse processes of thoracic and cervical vertebrae, and mastoid process
Spinalis: spinous processes of upper thoracic and midcervical vertebrae

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22
Q

Erector Spinae Innervation

A

Dorsal rami of each region

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23
Q

Erector Spinae Actions

A

Extends and laterally bends vertebral column and head

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24
Q

Semispinalis Origin and Insertion

A

Origin: transverse processes of C4-T12
Insertion: spinous processes of cervical and thoracic regions

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25
Q

Semispinalis Action

A

Extend head, neck, thorax, and rotate them to opposite side

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26
Q

Multifidi Origin and Insertion

A

Origin: sacrum, ilium, transverse processes of T1-T12, and articular processes of C4-C7
Insertion: spinous processes of vertebrae above, spanning 2-4 segments

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27
Q

Multifidi Action

A

Stabilizes the spine

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28
Q

Rotatores Origin and Insertion

A

Origin: transverse processes of C, T, and L regions
Insertion: lamina and transverse processes of C/T/L spines, spanning 1 or 2 segments

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29
Q

Rotatores Action

A

Stabilizes, extends, and rotates spine

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30
Q

Deltoid Origin and Insertion

A

Origin: lateral 1/3 of anterior clavicle, lateral acromion, and inferior edge of spine of scapula
Insertion: deltoid tuberosity of humerus

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31
Q

Deltoid Innervation

A

Anterior and posterior branches of axillary nerve (C5, C6)

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32
Q

Deltoid Actions
Note: clavicular part, acromial part, and spinal part

A

Clavicular Part: flexion + IR
Acromial Part: abduction beyond initial 15 degrees
Spinal Part: extension + ER

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33
Q

Supraspinatus Origin and Insertion

A

Origin: supraspinous fossa of scapula
Insertion: superior facet of greater tubercle of humerus

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34
Q

Supraspinatus Innervation

A

Suprascapular nerve (C5, C6)

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35
Q

Supraspinatus Action

A

initiates arm ABD, acts w/ RTC muscles

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36
Q

Infraspinatus Origin and Insertion

A

Origin: infraspinous fossa of scapula and deep fascia
Insertion: middle facet of greater tuberosity of humerus

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37
Q

Infraspinatus Innervation

A

Suprascapular Nerve (C5, C6)

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38
Q

Infraspinatus Action

A

ER (with teres minor)

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39
Q

Teres Minor Origin and Insertion

A

Origin: Upper 2 thirds of posterior surface of lateral border of scapula
Insertion: inferior facet of greater tuberosity of humerus

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40
Q

Teres Minor Innervation

A

Inferior subscapular nerve (C5, C6)

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41
Q

Teres Minor Action

A

ER

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42
Q

Teres Major Origin and Insertion

A

Origin: posterior surface of inferior angle of scapula
Insertion: medial lip of intertubercular groove of humerus

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43
Q

Teres Major Innervation

A

Inferior subscapular nerve (C5, C6)

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44
Q

Teres Major Action

A

ADD and IR

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45
Q

Subscapularis Origin and Insertion

A

Origin: subscapular fossa
Insertion: lesser tubercle of humerus

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46
Q

Subscapularis Innervation

A

Superior and inferior subscapular nerves (C5-C6)

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47
Q

Subscapularis Action

A

ADD, IR, and helps hold humerus head in glenoid fossa

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48
Q

Biceps brachii Origin and Insertion
Note: origin for long and short head

A

Origin:
Long Head: supraglenoid tubercle of scapula
Short Head: tip of coracoid process of scapula
Insertion: radial tuberosity

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49
Q

Biceps brachii Innervation

A

Musculocutaneous Nerve (C5, C6)

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50
Q

Biceps brachii Action

A

Flexes and supinates forearm and elbow

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51
Q

Coracobrachialis Origin and Insertion

A

Origin: tip of coracoid process of scapula
Insertion: middle 1/3 of medial surface of humerus

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52
Q

Coracobrachialis Innervation

A

Musculocutaneous nerve (C5, C6, C7)

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53
Q

Coracobrachialis Action

A

Flexes and adducts arm at shoulder

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54
Q

Brachialis Origin and Insertion

A

Origin: Distal half of anterior surface of humerus
Insertion: coronoid process and tuberosity of ulna

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55
Q

Brachialis Innervation

A

Musculocutaneous Nerve and Radial Nerve (C7)

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56
Q

Brachialis Action

A

Flexes forearm at elbow

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57
Q

Triceps brachii Origin and Insertion

A

Origin:
Long head: infraglenoid tubercle of scapula
Lateral head: upper half of posterior humerus
Medial head: distal 2/3 of medial and posterior humerus
Insertion: posterior surface of olecranon process of ulna

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58
Q

Triceps brachii Innervation

A

Radial Nerve (C6, C7, C8)

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59
Q

Triceps brachii Action

A

extends arm at elbow; long head stabilizes head of abducted humerus and extends/adducts arm at shoulder

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60
Q

Pronator Teres Origin and Insertion

A

Origin:
Two heads: medial epicondyle of humerus and coronoid process of ulna
Insertion: Midway along lateral surface of radius

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61
Q

Pronator Teres Innervation

A

Median Nerve (C6-C7)

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62
Q

Pronator Teres Actions

A

Pronates forearm and assists with elbow flexion

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63
Q

Flexor Carpi Radialis Origin and Insertion

A

Origin: Medial epicondyle of humerus
Insertion: Base of 2nd Metacarpal

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64
Q

Flexor Carpi Radialis Innervation

A

Median Nerve (C6, C7)

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65
Q

Flexor Carpi Radialis Actions

A

Flexes and abducts hand at wrist

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66
Q

Palmaris Longus Origin and Insertion

A

Origin: medial epicondyle of humerus
Insertion: distal half of flexor retinaculum and palmar aponeurosis

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67
Q

Palmaris Longus Innervation

A

Median Nerve (C7, C8)

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68
Q

Palmaris Longus Actions

A

Flexes hand and tenses palmar aponeurosis

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69
Q

Flexor Carpi Ulnaris Origin and Insertion

A

Origin:
Humeral Hair: medial epicondyle of humerus
Ulnar head: olecranon and posterior border of ulna
Insertion: pisiform bone, hook of hamate bone, and base of 5th metacarpal

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70
Q

Flexor Carpi Ulnaris Innervation

A

Ulnar Nerve (C7, C8, T1)

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71
Q

Flexor Carpi Ulnaris Actions

A

Flexes and adducts hand at wrist

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72
Q

Flexor Digitorum Superficialis Origin and Insertion

A

Origin:
Humeroulnar head: medial epicondyle of humerus and coronoid process of ulna
Radial head: superior half of anterior radius
Insertion: bodies of middle phalangeal bones of medial four digits

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73
Q

Flexor Digitorum Superficialis Innervation

A

Median nerve (C8-T1)

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74
Q

Flexor Digitorum Superficialis Actions

A

Flexes middle and proximal phalangeal bones of medial four digits; also flexes hand at wrist

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75
Q

Flexor Digitorum Profundus Origin and Insertion

A

Origin: medial and anterior surface of proximal three quarters of ulna, and interosseous membrane
Insertion: palmar base f distal phalangeal bones of medial four digits

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76
Q

Flexor Digitorum Profundus Innervation (lateral and medial part)

A

Medial part: ulnar nerve (C8-T1)
Lateral part: medial nerve (C8-T1)

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77
Q

Flexor Digitorum Profundus Actions

A

Flexes distal phalangeal bones of medial four digits; assists in flexion of hand at wrist

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78
Q

Flexor Pollicis Longus Origin and Insertion

A

Origin: Anterior surface of radius and interosseous membrane
Insertion: palmar base of distal phalanx of thumb

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79
Q

Flexor Pollicis Longus Innervation

A

Median nerve (anterior interosseous) (C7-C8)

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80
Q

Flexor Pollicis Longus Actions

A

flexes phalangeal bones of thumb

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81
Q

Pronator Quadratus Origin and Insertion

A

Origin: distal 1/4 of anterior ulna
Insertion: distal 1/4 of anterior radius

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82
Q

Pronator Quadratus Innervation

A

Median Nerve (anterior interosseous) (C7-C8)

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83
Q

Pronator Quadratus Actions

A

Pronates forearm

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84
Q

Brachioradialis Origin and Insertion

A

Origin: proximal 2/3 of lateral supracondylar ridge of humerus
Insertion: lateral side of distal end of radius

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85
Q

Brachioradialis Innervation

A

Radial Nerve (C5-C6)

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86
Q

Brachioradialis Actions

A

Weak flexion of forearm when forearm is midpronated

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87
Q

Extensor Carpi Radialis Longus Origin and Insertion

A

Origin: distal 1/3 of lateral supracondylar ridge of humerus
Insertion: dorsal base of 2nd metacarpal and slip to 3rd metacarpal

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88
Q

Extensor Carpi Radialis Longus Innervation

A

Radial nerve (C6-C7)

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89
Q

Extensor Carpi Radialis Longus Action

A

extends and abducts hand at wrist

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90
Q

Extensor Carpi Radialis Brevis Origin and Insertion

A

Origin: lateral epicondyle o humerus (common extensor tendon)
Insertion: dorsal base of 3rd metacarpal

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91
Q

Extensor Carpi Radialis Brevis Innervation

A

Radial Nerve (deep branch) (C7-C8)

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92
Q

Extensor Carpi Radialis Brevis Action

A

Extends and abducts hand at wrist

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93
Q

Extensor Digitorum Origin and Insertion

A

Origin: lateral epicondyle of humerus
Insertion: extensor expansions of medial four digits

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94
Q

Extensor Digitorum Innervation

A

Posterior interosseous nerve (C7-C8)

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95
Q

Extensor Digitorum Actions

A

extends medial four digits; assists in wrist extension

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96
Q

Extensor Digiti Minimi Origin and Insertion

A

Origin: lateral epicondyle of humerus (common extensor tendon)
Insertion: extensor expansion of 5th digit

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97
Q

Extensor Digiti Minimi Innervation

A

Radial nerve (posterior interosseous) (C7-C8)

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98
Q

Extensor Digiti Minimi Action

A

extends 5th digit

99
Q

Extensor Carpi Ulnaris Origin and Insertion

A

Origin: lateral epicondyle of humerus (common extensor tendon) and posterior border of ulna
Insertion: dorsal base of 5th metacarpal

100
Q

Extensor Carpi Ulnaris Innervation

A

Radial nerve (posterior interosseous) (C7-C8)

101
Q

Extensor Carpi Ulnaris Actions

A

Extends and abducts hand at wrist

102
Q

Anconeus Origin and Insertion

A

Origin: posterior surface of lateral epicondyle of humerus
Insertion: lateral surface of olecranon and posterior proximal ulna

103
Q

Anconeus Innervation

A

Radial Nerve (C5-C7)

104
Q

Anconeus Actions

A

assists triceps in extending elbow; abducts ulna during pronation

105
Q

Supinator Origin and Insertion

A

Origin: lateral epicondyle of humerus, supinator crest of ulna
Insertion: lateral, posterior, and anterior surfaces of proximal 1/3 of radius

106
Q

Supinator Innervation

A

Radial nerve (deep branch) (C6-C7)

107
Q

Supinator Action

A

supinates forearm

108
Q

Abductor Pollicis Longus Origin and Insertion

A

Origin: posterior surface of ulna, radius, and interosseous membrane
Insertion: base of 1st metacarpal

109
Q

Abductor Pollicis Longus Innervation

A

Radial nerve (posterior interosseous) (C7-C8)

110
Q

Abductor Pollicis Longus Actions

A

abducts and extends thumb at carpometacarpal joint

111
Q

Extensor Pollicis Brevis Origin and Insertion

A

Origin: posterior surface of radius and interosseous membrane
Insertion: dorsal base of proximal phalanx of thumb

112
Q

Extensor Pollicis Brevis Innervation

A

Radial nerve (posterior interosseous) (C7-C8)

113
Q

Extensor Pollicis Brevis Actions

A

extends proximal phalanx of thumb a carpometacarpal joint

114
Q

Extensor Pollicis Longus Origin and Insertion

A

Origin: posterior surface of middle 1/3 of ulna, interosseous membrane
Insertion: dorsal base of distal phalanx of thumb

115
Q

Extensor Pollicis Longus Innervation

A

Radial nerve (posterior interosseous) (C7-C8)

116
Q

Extensor Pollicis Longus Actions

A

Extends distal phalanx of thumb at interphalangeal and metacarpophalangeal joints

117
Q

Extensor Indicis Origin and Insertion

A

Origin: posterior surface of ulna, interosseous membrane
Insertion: extensor expansion of 2nd digit

118
Q

Extensor Indicis Innervation

A

Radial nerve (posterior interosseous) (C7-C8)

119
Q

Extensor Indicis Actions

A

Extends 2nd digit and help extend hand at wrist

120
Q

Abductor Pollicis Brevis Origin and Insertion

A

Origin: flexor retinaculum and tubercles of scaphoid + trapezium bones
Insertion: lateral side of base of proximal phalanx of thumb

121
Q

Abductor Pollicis Brevis Innervation

A

Median nerve (recurrent branch) (C8-T1)

122
Q

Abductor Pollicis Brevis Actions

A

Abducts and assists in opposition of thumb

123
Q

Flexor Pollicis Brevis Origin and Insertion

A

Origin: flexor retinaculum and tubercle of trapezium bone
Insertion: lateral side of base of proximal phalanx of thumb

124
Q

Flexor Pollicis Brevis Innervation

A

Median nerve (recurrent branch) (C8-T1)

125
Q

Flexor Pollicis Brevis Action

A

flexes proximal phalanx of thumb

126
Q

Opponens Pollicis Origin and Insertion

A

Origin: flexor retinaculum and tubercle of trapezium bone
Insertion: lateral side of 1st metacarpal

127
Q

Opponens Pollicis Innervation

A

Median nerve (recurrent branch) (C8-T1)

128
Q

Opponens Pollicis Actions

A

draws 1st metacarpal forward and rotates it medially

129
Q

Adductor Pollicis Origin and Insertion

A

Origin:
Oblique head: bases of 2nd and 3rd metacarpal bones, capitate, and adjacent bones
Transverse head: anterior surface of 3rd metacarpal
Insertion: anterior surface of 3rd metacarpal

130
Q

Adductor Pollicis Innervation

A

Ulnar nerve (deep branch) (C8-T1)

131
Q

Adductor Pollicis Action

A

adducts thumb

132
Q

Palmaris Brevis Origin and Insertion

A

Origin: palmar aponeurosis and flexor retinaculum
Insertion: skin of medial border of palm

133
Q

Palmaris Brevis Innervation

A

Superficial palmar branch of ulnar nerve (C8)

134
Q

Palmaris Brevis Actions

A

deepens hollow of hand, assists grip

135
Q

Lumbricals 1 and 2 Origin and Insertion

A

Origin: lateral two tendons of flexor digitorum profundus
Insertion: lateral sides of extensor expansion of digits 2 and 3

136
Q

Lumbricals 1 and 2 Innervation

A

Median Nerve (C8-T1)

137
Q

Lumbricals 1 and 2 Actions

A

Extends digits at interphalangeal joints and flexes metacarpophalangeal joints

138
Q

Lumbricals 3 and 4 Origin and Insertion

A

Origin: medial 3 tendons of flexor digitorum profundus
Insertion: lateral sides of extensor expansion of digits 4 and 5

139
Q

Lumbricals 3 and 4 Innervation

A

Ulnar nerve (deep branch) (C8-T1)

140
Q

Lumbricals 3 and 4 Action

A

extends digits at interphalangeal joints and flexes metacarpophalangeal joints

141
Q

Gluteus Maximus Origin and Insertion

A

Origin: ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, sacrotuberous ligament
Insertion: most fibers end in iliotibial tract that inserts into lateral condyle of tibia; some fibers insert into gluteal tuberosity of femur

142
Q

Gluteus Maximus Innervation

A

Inferior gluteal nerve (L5-S2)

143
Q

Gluteus Maximus Actions

A

extends flexed thigh, assists in ER, and abducts thigh

144
Q

Gluteus Medius Origin and Insertion

A

Origin: lateral surface of ilium between anterior and posterior gluteal lines
Insertion: lateral surface of greater trochanter of femur

145
Q

Gluteus Medius Innervation

A

Superior gluteal nerve (L4-S1)

146
Q

Gluteal Medius Actions

A

abducts and internally rotates thigh at hip, steadies pelvis on leg when opposite leg is raised

147
Q

Gluteus Minimus Origin and Insertion

A

Origin: lateral surface of ilium between anterior and inferior gluteal lines
Insertion: anterior surface of greater trochanter of femur

148
Q

Gluteus Minimus Innervation

A

superior gluteal nerve (L4-S1)

149
Q

Gluteus Minimus Actions

A

abducts and medially rotates thigh at hips; steadies pelvis on leg when opposite leg is raised

150
Q

Piriformis Origin and Insertion

A

Origin: anterior surface of sacral segments 2-4, sacrotuberous ligament
Insertion: superior border of greater trochanter of femur

151
Q

Piriformis Innervation

A

Anterior rami of upper L5, S1, S2

152
Q

Piriformis Actions

A

laterally rotates extended thigh, abducts flexed thigh at hip

153
Q

Obturator Internus Origin and Insertion

A

Origin: pelvic surface of obturator membrane and surrounding bone
Insertion: medial surface of greater trochanter of femur

154
Q

Obturator Internus Innervation

A

Nerve to obturator internus muscle (L5-S2)

155
Q

Obturator Internus Actions

A

laterally rotates extended thigh, abducts flexed thigh at hip

156
Q

Quadratus Femoris Origin and Insertion

A

Origin: lateral margin of ischial tuberosity
Insertion: quadrate tubercle on intertrochanteric crest of femur

157
Q

Quadratus Femoris Innervation

A

Nerve to quadratus femoris muscle (L4-S1)

158
Q

Quadratus Femoris Action

A

laterally rotates thigh at hip

159
Q

Iliopsoas/Psoas Major Origin and Insertion

A

Origin: sides of vertebrae T12-L5 and transverse processes of L1-L5
Insertion: lesser trochanter of femur

160
Q

Iliopsoas/Psoas Major Innervation

A

Anterior rami of lumbar spinal nerves 1-3

161
Q

Iliopsoas/Psoas Major Actions

A

flexes thigh at hip and stabilizes at hip

162
Q

Iliacus Origin and Insertion

A

Origin: superior 2/3 of iliac fossa, ala of sacrum, and anterior sacroiliac ligaments
Insertion: lesser trochanter of femur and body inferior to it, to psoas major tendon

163
Q

Iliacus Innervation

A

Femoral nerve (L2-L3)

164
Q

Iliacus Actions

A

flexes thigh at hip and stabilizes hip joint; acts with psoas major

165
Q

Tensor Fasciae Latae Origin and Insertion

A

Origin: anterior superior iliac spine and anterior part of iliac crest
Insertion: iliotibial tract that attaches to lateral condyle of tibia

166
Q

Tensor Fasciae Latae Innervation

A

Superior gluteal nerve (L4-L5)

167
Q

Tensor Fasciae Latae Actions

A

abducts, medially rotates, and flexes thigh at hip; helps to keep knee extended

168
Q

Sartorius Origin and Insertion

A

Origin: anterior superior iliac spine and superior part of notch below it
Insertion: superior part of medial surface of tibia

169
Q

Sartorius Innervation

A

Femoral nerve (L2-L3)

170
Q

Sartorius Actions

A

abducts, laterally rotates, and flexes thigh; flexes knee joint

171
Q

Quadratus Femoris Origin and Insertion

A

Origin: lateral margin of ischial tuberosity
Insertion: quadrate tubercle on intertrochanteric crest of femur

172
Q

Quadratus Femoris Innervation

A

Nerve to quadratus femoris muscle (L4-S1)

173
Q

Quadratus Femoris Action

A

Laterally rotates thigh at hip

174
Q

Rectus Femoris Origin and Insertion

A

Origin: lateral margin of ischial tuberosity
Insertion: quadrate tubercle on intertrochanteric crest of femur

175
Q

Rectus Femoris Innervation

A

Femoral nerve (L2-L4)

176
Q

Rectus Femoris Actions

A

Extends leg at knee joint and flexes thigh at hip joint

177
Q

Vastus Lateralis Origin and Insertion

A

Origin: greater trochanter, lateral lip of linea aspera of femur
Insertion: base of patella and to tibial tuberosity via patellar tendon/ligament

178
Q

Vastus Lateralis Innervation

A

Femoral nerve (L2-L4)

179
Q

Vastus Lateralis Action

A

Extends leg at knee joint

180
Q

Vastus Medialis Origin and Insertion

A

Origin: intertrochanteric line, medial lip of linea aspera of femur
Insertion: base of patella and to tibial tuberosity via patellar tendon/ligament

181
Q

Vastus Medialis Innervation

A

Femoral Nerve (L2-L4)

182
Q

Vastus Medialis Action

A

Extends leg at knee joint

183
Q

Vastus Intermedius Origin and Insertion

A

Origin: anterior and lateral surfaces of body of femur
Insertion: base of patella and to tibial tuberosity via patellar tendon/ligament

184
Q

Pectineus Origin and Insertion

A

Origin: superior ramus of pubis
Insertion: pectineal line of femur

185
Q

Pectineus Innervation

A

Femoral nerve (L2-L3) and sometimes Obturator nerve

186
Q

Pectineus Action

A

adducts and flexes thigh at hip

187
Q

Adductor Longus Origin and Insertion

A

Origin: body of pubis, inferior pubic crest
Insertion: middle 1/ of linea aspera of femur

188
Q

Adductor Longus Innervation

A

Obturator nerve (anterior division) (L2-L4)

189
Q

Adductor Longus Action

A

Adducts thigh at hip

190
Q

Adductor Brevis Origin and Insertion

A

Origin: body and inferior pubic ramus
Insertion: pectineal line and proximal part of linea aspera of femur

191
Q

Adductor Brevis Innervation

A

Obturator nerve (L2-L4)

192
Q

Adductor Brevis Actions

A

adducts thigh at hip, weak hip flexor

193
Q

Adductor Magnus Origin and Insertion (adductor part and hamstring part)

A

Origin:
ADD: inferior pubic ramus, ramus of ischium
HS: sciatic nerve (tibial division)
Insertion:
ADD: gluteal tuberosity, linea aspera, supracondylar line
HS: adductor tubercle of femur

194
Q

Adductor Magnus Innervation (adductor part and hamstring part)

A

ADD: Obturator nerve (L2-L4)
HS: tibial nerve (L4)

195
Q

Adductor Magnus Actions (adductor part and hamstring part)

A

ADD: adducts and flexes thigh
HS: extends thigh

196
Q

Gracilis Origin and Insertion

A

Origin: body and inferior ramus of pubis
Insertion: superior part of medial surface of tibia

197
Q

Gracilis Innervation

A

Obturator nerve (L2-L3)

198
Q

Gracilis Actions

A

adducts thigh, flexes and medially rotates leg

199
Q

Obturator Externus Origin and Insertion

A

Origin: margins of obturator foramen, obturator membrane
Insertion: trochanteric fossa of femur

200
Q

Obturator Externus Innervation

A

Obturator Nerve (L2-L3)

201
Q

Obturator Externus Actions

A

laterally rotates thigh, stabilizes head of femur in acetabulum

202
Q

Semitendinosus Origin and Insertion

A

Origin: upper medial ischial tuberosity
Insertion: superior part of medial surface of tibia

203
Q

Semitendinosus Innervation

A

Tibial division of sciatic nerve (L5-S2)

204
Q

Semitendinosus Actions

A

flexes leg, extends thigh

205
Q

Semimembranosus Origin and Insertion

A

Origin: upper and lateral ischial tuberosity
Insertion: posterior part of medial condyle of tibia

206
Q

Semimembranosus Innervation

A

Tibial division of sciatic nerve (L5-S2)

207
Q

Semimembranosus Actions

A

flexes leg, extends thigh

208
Q

Biceps Femoris Origin (long and short head) and Insertion

A

Origin:
Long Head: ischial tuberosity
Short Head: linea aspera and lateral supracondylar line of femur
Insertion: lateral side of head of fibula

209
Q

Biceps Femoris Innervation (long and short head)

A

Long Head: sciatic nerve (tibial division) (L5-S2)
Short Head: sciatic nerve (common fibular division)

210
Q

Biceps Femoris Actions

A

flexes and laterally rotates leg, extends thigh at hip

211
Q

Tibialis Anterior Origin and Insertion

A

Origin: lateral condyle and proximal half of lateral tibia, interosseous membrane
Insertion: medial plantar surfaces of medial cuneiform bone and base of 1st metatarsal bone

212
Q

Tibialis Anterior Innervation

A

Deep Fibular Nerve (L4-L5)

213
Q

Tibialis Anterior Actions

A

dorsiflexes foot at ankle and inverts foot

214
Q

Extensor Hallicus Longus Origin and Insertion

A

Origin: middle part of anterior surface of fibula and interosseous membrane
Insertion: dorsal aspect of base of distal phalanx of great toe

215
Q

Extensor Hallicis Longus Innervation

A

Deep Fibular Nerve (L5-S1)

216
Q

Extensor Hallicis Longus Actions

A

extends great toe, dorsiflexes foot at ankle

217
Q

Extensor Digitorum Longus Origin and Insertion

A

Origin: lateral condyle of tibia, proximal 3/4s of anterior surface of interosseous membrane and fibula
Insertion: middle and distal phalangeal bones of lateral four digits

218
Q

Extensor Digitorum Longus Innervation

A

Deep fibular nerve (L5-S1)

219
Q

Extensor Digitorum Longus Actions

A

extends lateral 4 digits and dorsiflexes foot at ankle

220
Q

Peroneus Longus Origin and Insertion

A

Origin: head and proximal 2/3s of lateral fibula
Insertion: plantar base of 1st metatarsal bone and medial cuneiform

221
Q

Peroneus Longus Innervation

A

Superficial fibular nerve (L5-S2)

222
Q

Peroneus Longus Actions

A

everts foot, weakly plantarflexes foot at ankle

223
Q

Peroneus Brevis Origin and Insertion

A

Origin: distal 2/3s of lateral surface of fibula
Insertion: dorsal surface of tuberosity on base of 5th metatarsal bone

224
Q

Peroneus Brevis Innervation

A

Superficial fibular nerve (L5-S2)

225
Q

Peroneus Brevis Actions

A

everts foot and weakly plantarflexes foot at ankle

226
Q

Gastrocnemius Origin and Insertion

A

Origin:
Lateral Head: lateral aspect of lateral condyle of femur
Medial Head: popliteal surface above medial condyle of femur
Insertion: posterior aspect of calcaneus via achilles tendon

227
Q

Gastrocnemius Innervation

A

Tibial nerve (S1-S2)

228
Q

Gastrocnemius Actions

A

plantarflexes foot at ankle joint, assists in flexion of knee joint

229
Q

Soleus Origin and Insertion

A

Origin: posterior aspect of head of fibula, proximal 1/4 of posterior surface of fibula, soleal line of tibia
Insertion: posterior aspect of calcaneus via achilles tendon

230
Q

Soleus Innervation

A

Tibial nerve (S1-S2)

231
Q

Soleus Actions

A

plantarflexes foot at ankle, stabilizes leg over foot

232
Q

Plantaris Origin and Insertion

A

Origin: inferior end of lateral supracondylar line of femur and oblique popliteal ligament
Insertion: posterior aspect of calcaneus via achilles tendon

233
Q

Plantaris Innervation

A

Tibial nerve (L5-S1)

234
Q

Plantaris Actions

A

weakly assists gastrocnemius

235
Q

Popliteus Origin and Insertion

A

Origin: lateral aspect of condyle of femur, lateral meniscus
Insertion: posterior tibia superior to soleal line

236
Q

Flexor Hallucis Longus Origin and Insertion

A

Origin: distal 2/3s of posterior fibula, inferior part of interosseous membrane
Insertion: base of distal phalanx of great toe

237
Q

Flexor Hallucis Longus Innervation

A

Tibial nerve (L5-S2)

238
Q

Flexor Hallucis Longus Actions

A

flexes all joints of great toe, weakly plantarflexes foot at ankle

239
Q

Flexor Digitorum Longus Origin and Insertion

A

Origin: medial part of posterior tibia inferior to soleal line
Insertion: plantar bases of distal phalangeal bones of lateral 4 digits

240
Q

Flexor Digitorum Longus Innervation

A

Tibial nerve (L5-S1)

241
Q

Flexor Digitorum Longus Actions

A

flexes lateral 4 digits and plantarflexes foot at ankle; supports longitudinal arches of foot

242
Q

Tibialis Posterior Origin and Insertion

A

Origin: posterior tibia below soleal line, interosseous membrane, proximal 1/2 of posterior fibula
Insertion: tuberosity of navicular bone, all cuneiforms, cuboid bone, and bases of 2-4 metatarsal bones

243
Q

Tibialis Posterior Innervation

A

Tibial nerve (L4-L5)

244
Q

Tibialis Posterior Actions

A

plantarflexes foot at ankle and inverts foot

npte memorization (3 decks)

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