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Muscles Flashcards

1
Q

Deltoid origin

A

lateral 1/3 of the clavicle, acromion and spine of the scapula

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2
Q

Deltoid Insertion

A

Deltoid tuberosity

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3
Q

Deltoid Innervation

A

Axillary nerve (C5,C6)

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4
Q

Deltoid action

A

Anterior deltoid:Flexes and medially rotates
Middle Deltoid: Abduction
Posterior Deltoid: Extension and Laterally rotates

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5
Q

Supraspinatus origin

A

Supraspinous fossa

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6
Q

Supraspinatus Insertion

A

Superior Facet of greater tubercle

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7
Q

Supraspinatus Innervation

A

Suprascapular nerve(C4,C5,C6)

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8
Q

Supraspinatus Action

A

Abduction of arm

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9
Q

Infraspinatus Origin

A

Infraspinous fossa

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10
Q

Infraspinatus Insertion

A

Middle Facet of greater tubercle

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11
Q

Infraspinatus Innervation

A

Suprascapular nerve(C5,C6)

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12
Q

Infraspinatus Action

A

Lateral rotation

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13
Q

Teres Minor origin

A

Middle portion of lateral border of scapula

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14
Q

Teres Minor Insertion

A

Inferior Facet of greater tubercle

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15
Q

Teres Minor Innervation

A

Axillary Nerve(C5,C6)

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16
Q

Teres Minor Action

A

Lateral Rotation

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17
Q

Pectoralis Major Origin

A

Clavicular head: Medial half of the clavicle

Sternal head: Sternum, superior 6 costal cartliages and aponeurosis of external obliques

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18
Q

Pectoralis Major Insertion

A

Lateral lip of the intertubecular sulcus

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19
Q

Pectoralis Major Innervation

A

Medial and lateral Pectoral nerves:
Clavicular head: C5,C6
Sternal head: C7, C8, T1

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20
Q

Pectoralis Major Action

A

Adduction and medially rotate humerus, pulls scapula anteriorly and inferiorly

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21
Q

Pectoralis Minor Origin

A

3rd-5th ribs near costal cartilages

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22
Q

Pectoralis Minor Insertion

A

Medial and superior border of coracoid process

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23
Q

Pectoralis Minor Innervation

A

Medial Pectoral nerve C8 T1

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24
Q

Pectoralis Minor Action

A

Stabilization and draw scapula inferiorly and anteriorly to thoracic wall

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25
Subclavius Origin
Junction of 1st rib and its costal cartilage
26
Subclavius Insertion
internal surface of middle third of clavicle
27
Subclavius Innervation
Nerve to subclavius C5,C6
28
Subclavius Action
Anchors and depresses clavicle
29
Serratus Anterior Origin
External Surface of 1-8th ribs
30
Serratus Anterior Insertion
Anterior Medial Border of scapula
31
Serratus Anterior Innervation
Long Thoracic Nerve(C5,C6,C7)
32
Serratus Anterior Action
Protraction and holds against thoracic wall, rotates scapula
33
Teres Major Origin
Posterior surface of inferior angle of scapula
34
Teres Major Insertion
Medial lip of intertubecular groove
35
Teres Major Innervation
Lower Subscapular Nerve(C5,C6)
36
Teres Major Action
Adducts and medial rotates
37
Subscapularis Origin
Subscapular fossa
38
Subscapularis Insertion
Lesser Tubercle
39
Subscapularis Innervation
Upper and Lower Subscapular nerve(C5,C6,C7)
40
Biceps Brachii Origin
Long Head: Supraglenoid Tubercle of Scapula | Short Head: tip of coracoid process of scapula
41
Biceps Brachii Insertion
Tuberosity of the radius and fascia via bicipital aponeurosis
42
Biceps Brachii Innervation
Musculocutaneous Nerve(C5, C6, C7)
43
Biceps Brachii Action
Supination and Flexion of the forearm
44
Coracobrachialis Origin
tip of th coracoid prosess
45
Coracobrachialis Insertion
Middle Medial shaft of the humerus
46
Coracobrachialis Innervation
Musculocutaneous Nerve(C5,C6,C7)
47
Coracobrachialis Action
Adduction and flexion
48
Brachialis Origin
Dital half of the anterior surface of humerus
49
Brachialis Insertion
Coronoid process and tuberosity of the ulna
50
Brachialis Innervation
Musculocutaneous Nerve(C5,C6,C7), Radial Nerve (C5,C6)
51
Brachialis Action
Flexes forearm in all postitions(main muscle for forearm flexion)
52
Triceps Brachii Origin
Long Head: Infraglenoid Tubercle of the scapula Lateral Head: Posterior surface of humerus superior to the radial groove Medial Head: posterior surface of humerus inferior to the radial groove
53
Triceps Brachii Insertion
Olecranon Process of ulna and fascia of forearm
54
Triceps Brachii Innervation
Radial Nerve(C6,C7,C8)
55
Triceps Brachii Action
Extension of the forearm
56
Anconeus Origin
Lateral epicondyle of humerus
57
Anconeus Insertion
Lateral surface of the olecranon and superior part of posterior surface of ulna
58
Anconeus Innervation
Radial Nerve(C7, C8, T1)
59
Anconeus Action
Extends forearm, stabilize elbow joint and abduct ulna during pronation
60
Pronator Teres Origin
Ulnar Head: Coronoid Process | Humeral Head: Epicondyle of Humerus
61
Pronator Teres Insertion
medial convexity of lateral surface of the radius
62
Pronator Teres Innervation
Median Nerve(C6,C7)
63
Pronator Teres Action
Pronation and flexes forearm
64
Flexor Carpi Radialis Origin
Medial Epicondyle of humerus
65
Flexor Carpi Radialis Insertion
base of 2nd metacarpal
66
Flexor Carpi Radialis Innervation
Median Nerve(C6,C7)
67
Flexor Carpi Radialis Action
flexes hand and tenses palmer aponeurosis
68
Palmaris Longus Origin
Medial Epicondyle of humerus
69
Palmaris Longus Insertion
flexes and abducts hand
70
Palmaris Longus Innervation
Median Nerve(C7,C8)
71
Palmaris Longus Action
flexes hand and tenses the palmar aponeurosis
72
Flexor Carpi Ulnaris Origin
Humeral Head: Medial epicondyle of humerus | Ulnar head: Olecranon and posterior border
73
Flexor Carpi Ulnaris Insertion
Pisiform, Hook of hamate and 5th metacarpal
74
Flexor Carpi Ulnaris Innervation
Ulnar Nerve(C7,C8)
75
Flexor Carpi Ulnaris Action
Flex and adduct hand
76
Flexor Digitorum Superficialis Origin
Humeroulnar Head: Medial Epicondyle | Radial Head: Superior half of anterior border
77
Flexor Digitorum Superficialis Insertion
Shafts of middle phalanges of medial 4 digits
78
Flexor Digitorum Superficialis Innervation
Median Nerve(C7,C8,T1)
79
Flexor Digitorum Superficialis Action
Flexes middle phalanges at proximal interphalangeal joint of middle 4 digits; flexes proximal phalanges at metacarpophalangeal joints
80
Flexor Digitorum Profundus Origin
proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
81
Flexor digitorum Profundus Insertion
Medial Part: Bases of distal phalanges of 4th and 5th digits | Lateral Part: Bases of distal phalanges of 2nd and 3rd digits
82
Flexor Digitorum Profundus Innervation
Medial: Ulnar nerve(C8,T1) Lateral: Anterior interosseous Nerve(C8, T1)
83
Flexor digitorum Profundus Action
medial:flexes distal 4th and 5th phalanges interphalanges joint Lateral:flexes distal 2nd and 3rd phalanges at interphalangeal joint
84
Flexor Pollicis Longus Origin
Anterior Surface of radius and adjacent interosseous membrane
85
Flexor Pollicis Longus Insertion
base of distal phalanx of thumb
86
Flexor Pollicis Longus Innervation
Anterior Interosseous nerve(C8,T1)
87
Flexor Pollicis Longus Action
Flexes phalanges of 1st digit
88
Pronator Quadratus Origin
distal 1/4 of anterior surface of the ulna
89
Pronator Quadratus Insertion
Distal 1/4 of the anterior surface of the radius
90
Pronator Quadratus Innervation
Anterior Interosseous Nerve(C8,T1)
91
Pronator Quadratus Action
Pronates forearm
92
Brachioradialis Origin
Proximal 2/3 of supraepicondylar ridge of humerus
93
Brachioradialis Insertion
Lateral surface of the distal end of the radius proximal to the styloid process
94
Brachioradialis Innervation
Radial Nerve(C5, C6, C7)
95
Brachioradialis Action
weak flexion of forearm
96
Extensor Carpi Radialis Longus Origin
Lateral supraepicondylar of humerus
97
Extensor Carpi Radialis Longus Insertion
Dorsal aspect of base of 2nd metacarpal
98
Extensor Carpi Radialis Longus Innervation
Radial Nerve(C6,C7)
99
Extensor Carpi Radialis Longus Action
Extend and abduct hand
100
Extensor Carpi Radialis Brevis Origin
Lateral epicondyle of humerus
101
Extensor Carpi Radialis Brevis Insertion
Dorsal aspect of base of 3rd metacarpal
102
Extensor Carpi Radialis Brevis Innervation
Deep Branch of radial nerve(C7,C8)
103
Extensor Carpi Radialis Brevis Action
Extend and abduct hand
104
Extensor Digitorum Origin
Lateral epicondyle of humerus
105
Extensor digitorum Insertion
Extensor expansions of medial 4 digits
106
Extensor Digitorum Innervation
deep branch of radial nerve(c7,C8)
107
Extensor digiti Minimi Origin
Lateral Epicondyle of humerus
108
Extensor Digiti Minimi Insertion
Extensor expansion of 5th digit
109
Extensor Digiti Minimi Innervation
Deep Branch of radial nerve(C7,C8)
110
Extensor Digiti Minimi Action
extends 5th digit primarily at metacarpophlangeal joint
111
Extensor Carpi Ulnaris Origin
Lateral epicondyle of humerus, posterior border of ulna
112
Extensor Carpi Ulnaris Insertion
Dorsal aspect of base of 5th metacarpal
113
Extensor Carpi Ulnaris Innervation
Deep Branch of the Radial Nerve(C7,C8)
114
Extensor Carpi Ulnaris Action
extends and adducts hand at wrist joint
115
Supinator Origin
Lateral epicondyle of humerus, radial collateral and anular ligaments, supinator fossa and crest of ulna
116
Supinator Insertion
lateral posteriorand anterior surfaces of the proximal 1/3 of radius
117
Supinator Innervation
Deep Branch of Radial nerve(C7,C8)
118
Supinator Action
supinates forearm, rotates radius to turn palm anteriorly and superiorly
119
Extensor Indicis Origin
Posterior Surface of distal 1/3 of ulna and interosseous membrane
120
Extensor Indicis Insertion
Extensor Expansion of 2nd digit
121
Extensor Indicis Innervation
Posterior Interosseous Nerve(C7,C8)
122
Extensor Indicis Action
extends 2nd digit and hand
123
Abductor Pollicis Longus Origin
Posterior surface of proximal halves of ulna, radius and interosseous membrane
124
Abductor Pollicis Longus Insertion
Base of 1st metacarpal
125
Abductor Pollicis Longus Innervation
Posterior Interosseous Nerve(C7,C8)
126
Abductor Pollicis Longus Action
abduct thumbs and extends at the carpometaparal joint
127
Extensor Pollicis Longus Origin
Posterior surface of middle 1/3 of ulna and interosseous membrane
128
Extensor Pollicis Longus Insertion
dorsal aspect of base of distal phalanx of thumb
129
Extensor Pollicis Longus Innervation
Posterior Interosseous Nerve(C7,C8)
130
Extensor Pollicis Longus Action
extends distal phalanx of thumb at interphalangeal joint, extend metacarpophalangeal and carpometacarpal joint
131
Extensor Pollicis Brevis Origin
Posterior surface of distal 1/3 of radius and interosseous membrane
132
Extensor Pollicis Brevis Insertion
dorsal aspect of base of proximal phalanx of thumb
133
Extensor Pollicis Brevis Innervation
Posterior Interosseous Nerve (C7, C8)
134
Extensor Pollicis Brevis Action
extends proximal phalanx of thumb at metacarpophalngeal joint, extends carpometacarpal joint

Anatomy (24 decks)

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