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Muscles Flashcards

(58 cards)

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1
Q

Trapezius

A

Origin: Skull(external occipital protuberance)
Fascia(ligamentum nuchea)
Vertebra(C7,T1-T12)

Insert: Lateral 1/3 of clavicle
Acromion and spine of scapula

Elevates and depress shoulder
Retracts scapula
Extend head

Cranial Nerve 11 or accessor nerve

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2
Q

Latissimus dorsi

A

Origin: Vertebra (T6-T12)
Thoracolumbar fascia
Iliac crest of pelvic bone

Insert: Humerus (bicipital groove)

Adductor, extends and medially rotate arm i.e. Swimmer muscle

Thoracodorsal nerve

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3
Q

Lavatory Scapulae

A

Origin: Transverse process of C1-C4
Insert: Superior angle and medial border of scapula

Elevates and adducts scapula

Dorsal scapular nerve

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4
Q

Rhomboid Minor

A

Origin: C7-T1
Insert Medial border of scapula

Elevates and adducts scapula

Dorsal Scapula Nerve

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5
Q

Rhomboid Major

A

Origin: spines T2-T5
Insert: medial border to inferior angle of scapula

Elevates and adducts scapula

Dorsal Scapular

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6
Q

Lavatories Costarum

A

Origin: Transverse Processes of C7, T1-11
Insert: Inferior origin of ribs

Raise ribs for inspiration

Dorsal Rami of thoracic spinal nerves

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7
Q

Serratus Posterior Superior

A

Origin: Spines of cervicle and upper thoracic vertebral
Insert: Ribs

Raise ribs for inspiration

Intercostal Nerves

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8
Q

Serratus Posterior Inferior

A

Origin: Spines of Upper Lumbar and lower thoracic vertebra
Insert: Ribs

Lower ribs for expiration

Intercostal nerves

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9
Q

Splenius

A

Origin: Spines of T1-T4
Insert:Splenius Capitus to Skull (occipital and temporal bones)
Splenius Cervicis to vertebra (transverse process of C2-C3)

Extend Neck and head (rotate in unilateral action)

Dorsal rami of spinal nerves

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10
Q

Iliocostalis

A

Part of erector spinae

Origin: Ilium and ribs
Insert: Ribs and transverse process

Extend truck and vertebral columns

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11
Q

Longissmus

A

Part of Erector Spinae

Origin: Tranverse processes of vertebra
Insert: Transverse processes of vertebra

Extend trunk and vertebral column

Dorsal rami of spinal nerves

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12
Q

Spinalis

A

Part of erector spinae

Origin: spinous processes
Insert: spinous process

Extend trunk and vertebral column

Dorsal rami of spinal nerves

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13
Q

Semispinalis

A

Part of transversospinalis

Origin: transverse process of vertebra
Insert: Spines of vertebra superior to origin. Extend across 5-6 vertebra.

All extend trunk in bilateral action and rotate vertebral column in unilateral action

Dorsal rami of spinal nerves

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14
Q

Multifidus

A

Part of transversospinalis

Origin: transverse process of vertebra
Insert: Spines of vertebra superior to origin. Extend across 3-4 vertebra.

All extend trunk in bilateral action and rotate vertebral column in unilateral action

Dorsal rami of spinal nerves

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15
Q

Rotators

A

Part of transversospinalis

Origin: transverse process of vertebra
Insert: Spines of vertebra superior to origin. Extend across 1-2 vertebra.

All extend trunk in bilateral action and rotate vertebral column in unilateral action

Dorsal rami of spinal nerves

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16
Q

Pectoralis Major

A

Origin: Medial Half of clavicle and costal cartilage 1-6
Insert: Intertubercular Sulcus

Action: Adducts and medially rotates the arm
Claviciular head: flexes arm
Sternocostal head: assists in respiration when shoulders is
Fixed

Medial and Lateral pectoral nerves from medial and lateral cords of brachial plexus

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17
Q

Pectoralis Minor

A

Origin: 3-5 ribs near cartilage
Insert: Coracoid Process of scapula

Action: Depress scapula, elevates ribs of origin to assist in
respiration when the shoulder is fixed

Medial Pectoral Nerve

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18
Q

Serratus Anterior

A

Origin: upper 8 ribs
Insert: Medial (vertebral) border of scapula

Rotates scapula; draws scapula forward around thoracic wall (protraction), holds scapula against thoracic wall

Long thoracic (nerve to serratus anterior)

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19
Q

Subclavius

A

Origin: 1st Costal Cartilage
Inset: Inferior surface of the clavicle

Anchors & Depresses clavicle during upper limb movements

Nerve to subclavius

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20
Q

Deltoid

A

Origin: lateral 1/3 of clavicle, acromion, scapular spine
Insert: Deltoid tuberosity of humerous

Flexes, medial rotate arm thanks to the clavicle
Abducts arm thanks to the acromion
Extends, laterally rotate arm thanks to the Posterior scapular spine

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21
Q

Supraspinatus

A

Origin: supraspinous fossa of scapula
Insert: greater tubercle of humerous

Initiates abduction of arm; stabilize shoulder joints

Suprascapular nerve

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22
Q

Infraspinatus

A

Origin: Infraspinous fossa of scapula
Insert: Greater Tubercle of humerus

Laterally rotates arm; stabilizes shoulder joint

Suprascapular nerve

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23
Q

Teres Minor

A

Origin: Upper Lateral Border of Scapula
Insert: Greater tubercle of humerus

Laterally rotate arm; stabilizes shoulder joint

Axillary Nerve

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24
Q

Subscapularis

Study These Flashcards
A

Origin: subscapular fossa of scapula
Insert: lesser tubercle of humerous

Medially rotate arms; stabilize shoulder joint

Upper& Lower subscapular nerve

25
Teres Major
Origin: Inferior border of scapula Insert: crest of lesser tubercle of humerus Medially rotates hand, adducts arm, extends arm Lower subscapular nerve
26
Biceps Brachii
O: Anterior Humerous I: Radial tuberosity and bicipital aponeurosis Flexor of forearm Supinator of forearm Weak flexor of arm at glenohumeral joint Musculocutaneous nerve
27
Coracobrachialis
O: Coracoid process of scapula I: Mid-shaft of humerus Weak flexor of arm at glenohumeral joint Musculocutaneous nerve
28
Brachialis
O: Anterior Humerus I: Coronoid process of ulna Powerful flexor of forearm Musculocutanous nerve.
29
Triceps
O: Long head is infraglenoid tubercle of scapula Medial and lateral head is posterior humerus I: Olecron process of ulna Extension of forearm Radial nerve
30
Anconeus
O: lateral epicondyle of humerous I: Olecranon of Ulna Extends forearm (assist triceps) Radial Nerve
31
Pronator Teres
Superficial group O: Medial epicondyle of humerous and coronoid process of ulna I: Lateral radial midshaft Pronates forearm Median Nerve
32
Flexor Carpi Radialis
O: Medial Epicondyle of the humerous I: Base of 2nd metacarpal( sometimes 3rd) Superficial muscle Flexes and abducts wrist joints Median Nerve
33
Palmaris Longus
O: Medial Epicondyle of the humerous I: Palmart Aponeurosis Superficial Group Flex wrist Median Nerve
34
Flexor carpi ulnaris
O: Medial Epicondyle I: Pisiform, hook hamate, base of 5th metacarpal Superficial Group Flexes and adducts wrist joint Ulnar Nerve
35
Flexor Digitorum Superficialis
O: Medial Epicondyle of the Humerous I: Sides of middle phalanges 2-5. Tendons will bifurcates Intermediate group Flexes wrist, MCP, PIP joints of digits 2-5 Median Nerve
36
Flexor Pollicis Longus
O: Midshaft of radius and interosseous membran I: Distal Phalanx of thumb Deep Group Flexes MCP and IP joint of thumb Median nerve
37
Flexor Digitorum Profundus
O: Ulna and interosseous membran I: Distal phalanges of digits 2-5. Tendon passes through flexor Digitorum superficialis Flex wrist, MCP, PIP, DIP joints of digits 2-5 Median nerve does lateral halve Ulnar nerve does medial halve
38
Pronator Quadratus
O: Distal Ulna I Distal radius Deep group Pronates hand Median Nerve
39
Brachioradialis
Superficial Posterior forearm O: Lateral Supracondylar ridge of humerous I: Styloid Process of Radius Flex elbow at midprone position Radial Nerve
40
Extensor Carpi Radialis Longus
O: Lateral supracondylar ridge of humerus I: Base of 2nd metacarpal Extends and abducts wrist joint Radial Nerve
41
Extensor Carpi Radialis Brevis
O: Lateral Epicondyle of humerus I: Base of 3rd metacarpal Superficial Extensor of forearm Extends and abducts wrist joints Radial Nerve
42
Extensor Digitorum
O: lateral Epicondyle of humerous I: Dorsal Digital Expansions on middle and distal phalanges of digits 2-5 Extends Wrist joint Extend digits 2-5 at MCP, PIP, DIP joints Radial Nerve
43
Extensor Digiti minimi
O: Lateral Epicondyle of Humerus I: Middle and Distal phalanges of 5th digit via extensor expansion Extends wrist joint Extends 5th digit at MCP, PIP, DIP joints Radial Nerve
44
Extensor Carpi Ulnaris
O:Lateral epicondyle of humerus I:Base of 5th metacarpal Extends wrist Adducts wrist Radial Nerve
45
Supinator
O:Lateral Epicondyle of Humerus I: upper lateral radius Supination of arm Radial Nerve
46
Abductor Pollicis Longus
O: Ulna and Interosseous membran I: Base of 1st metacarpal Abducts thumb Radial Nerve
47
Extensor Pollicis Brevis
O: Interosseous Membrane I: Base of proximal phalanx of thumb Extends proximal phalanx of thumb radial nerve
48
Extensor Pollicis Longus
O: Ulna and interosseous membrane I: Base of the distal phalanx of thumb Extends distal phalanx of thumb Radial Nerve
49
Abductor Pollicis brevis
O: Tubercle of scphoid and trapezium flexor retinaculum I: Lateral side of proximal phalanx of thumb abduct thumb median nerve
50
flexor pollicis brevis
superficial head: O: flexor retinaculum I: lateral side proximal phalanx o thumb Deep Head: O: Capitate and trapezium I: lateral side proximal phalanx to thumb flexes thumb median nerve
51
opponens pollicis
O: tubercle of trapezium I: lateral side of 1st metacarpal Opposition of thumb Median Nerve
52
adductor pollicis
Oblique Head O: Capitate and bases of 2nd and 3rd metacarpal I: Base of the proximal phalanx of thumb Transvere Head O: Shaft of 3rd metacarpal I:Base of the proximal phalanx of thumb adducts thumb Ulnar nerve
53
Palmaris Brevis
O: Palmar Aponeurosis I: Skin of the hypothenar eminence Tightens skin over hypothenar eminence Ulnar Nerve
54
Abductor Digiti Minimi
O: Pisiform I: Medial Side of the proximal phalanx of 5th digit Abducts 5th digits Ulnar Nerve
55
Opponens Digiti Minimi
O: Hook of Hamate and flexor retinaculum I: 5th metacarpal Laterally Rotates Metacarpal 5 to oppose little finger w/ thumb Ulnar Nerve
56
Doral Interossei (4)
O: Sides of adjacent metacarpals I: Proximal phalanges and dorsal digital expansions Abduct digits 2,3,4 Flex MCP joins Extend PIP, DIP (assist lumbrical) Ulnar nerve
57
Palmar Interossei (3)
O: Medial SIde of metacarpal 2 Lateral Side of metacarpal 4 Lateral Side of metacarpal 5 I: proximal phalanges and dorsal digital expansion
58
Lumbricals (4)
O: Tendons of flexor digitorum profundus I: Lateral side of extensor expansion of digits 2-5 Flexes MCP joints, extends DIP and PIP Medain for 1 and 2 Ulnar for 3 &4

Upper Limb (2 decks)

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