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Anatomy 2 > Muscles Masterlist > Flashcards

Muscles Masterlist Flashcards

1
Q

Subclavius

A

A: depress and anchor clavicle
PA: junction of 1st rib and its costal cartilage
DA: inferior surface of middle clavicle
N: nerve to subclavius (C5, C6)

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2
Q

Anterior Scalene

A

A: elevate 1st rib during forced inhalation, lateral flexion of neck
PA: TP C3-C6
DA: 1st rib
N: cervical spinal nerve C4, C5, C6

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3
Q

Middle Scalene

A

A: elevate 1st rib during forced inhalation, lateral flexion of neck
PA: TP C5-C7
DA: 1st rib
N: ventral rami of cervical spinal nerves

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4
Q

Posterior Scalene

A

A: elevate 2nd rib during forced inhalation, lateral flexion of neck
PA: TP C5-C7
DA: 2nd rib
N: ventral rami of cervical spinal nerves (C7, C8)

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5
Q

Biceps Brachii

A

A: supinate and flex forearm, (short head) resists dislocation of shoulder
PA: (short head) coracoid process, (long head) supraglenoid tubercle and labrum
DA: radial tuberosity, fascia of forearm via bicipital aponeurosis
N: musculocutaneous nerve (C5, C6, C7)

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6
Q

Coracobrachialis

A

A: flex and adduct shoulder, resists dislocation of shoulder
PA: coracoid process
DA: middle humerus
N: musculocutaneous nerve (C5, C6, C7)

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7
Q

Brachialis

A

A: flex elbow in all positions
PA: distal anterior humerus
DA: ulnar tuberosity, coronoid process of ulna
N: musculocutaneous nerve (C5, C6)

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8
Q

Brachioradialis

A

A: flex elbow in midpronated position, assist w/ supination/pronation when restricted/from end range
PA: lateral supra-epicondylar ridge of humerus
DA: distal lateral radius (proximal to styloid process)
N: radial nerve (C5, C6, C7)

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9
Q

Triceps Brachii

A

A: extend elbow, (long head) resists dislocation of shoulder
PA: (long head) infraglenoid tubercle, (lateral head) posterior humerus superior to radial groove, (medial head) posterior humerus inferior to radial groove
DA: olecranon of ulna
N: radial nerve (C6, C7, C8)

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10
Q

Anconeus

A

A: assist triceps in elbow extension, stabilize elbow joint, may abduct ulna during pronation
PA: lateral epicondyle of humerus
DA: lateral olecranon
N: radial nerve (C7, C8, T1)

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11
Q

Pronator Teres

A

A: pronate forearm, assists to flex elbow
PA: medial epicondyle of humerus (common flexor tendon), coronoid process
DA: middle radius (lateral surface)
N: median nerve (C6, C7)

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12
Q

Flexor Carpi Radialis

A

A: flex wrist, radial deviation
PA: medial epicondyle of humerus
DA: bases of 2nd and 3rd metacarpals
N: median nerve (C6, C7)

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13
Q

Flexor Carpi Ulnaris

A

A: flex wrist, ulnar deviation
PA: (humeral head) medial epicondyle of humerus, (ulnar head) posterior ulna
DA: base of 5th metacarpal, pisiform, hook of hamate
N: ulnar nerve (C7, C8)

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14
Q

Flexor Digitorum Superficialis

A

A: flex proximal (MCP) and middle (PIP) phalanges of digits 2-5
PA: (humero-ulnar head) medial epicondyle of humerus and coronoid process, (radial head) anterior radius
DA: shafts of middle phalanges of medial 4 digits
N: median nerve (C7, C8, T1)

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15
Q

Flexor Digitorum Profundus

A

A: flex medial 4 digits (MCP, PIP, DIP), assists to flex wrist
PA: proximal ulna, interosseous membrane
DA: (medial) base of distal phalanges of digits 4-5, (lateral) base of distal phalanges of digits 2-3
N: (digits 2-3) median nerve (AIN) (C8, T1), (digits 4-5) ulnar nerve (C8, T1)

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16
Q

Flexor Pollicis Longus

A

A: flex phalanges of 1st digit (thumb)
PA: anterior radius, adjacent interosseous membrane
DA: base of distal phalanx of thumb
N: median nerve (AIN) (C8, T1)

17
Q

Pronator Quadratus

A

A: pronate forearm, deep fibers bind radius and ulna together
PA: distal ulna
DA: distal radius
N: median nerve (AIN) (C8, T1)

18
Q

Extensor Carpi Radialis Longus/Brevis

A

A: extend wrist, radial deviation, (longus) active during fist clenching
PA: (longus) lateral supra-epicondylar ridge of humerus, (brevis) lateral epicondyle of humerus (common extensor tendon)
DA: (longus) base of 2nd metacarpal, (brevis) base of 3rd metacarpal
N: radial nerve (C6, C7, C8)

19
Q

Extensor Digitorum

A

A: extend medial 4 digits (MCP, PIP, DIP)
PA: lateral epicondyle of humerus
DA: extensor expansions of medial 4 digits
N: radial nerve (deep branch) (C7, C8)

20
Q

Extensor Digiti Minimi

A

A: extend 5th digit (MCP, PIP, DIP)
PA: lateral epicondyle of humerus
DA: extensor expansion of 5th digit
N: radial nerve (deep branch) (C7, C8)

21
Q

Extensor Carpi Ulnaris

A

A: extend wrist, ulnar deviation, active during fist clenching
PA: lateral epicondyle of humerus
DA: base of 5th metacarpal
N: radial nerve (C7, C8)

22
Q

Supinator

A

A: supinate forearm
PA: lateral epicondyle of humerus, radial collateral ligament, anular ligament
DA: lateral radius
N: radial nerve (PIN) (C7, C8)

23
Q

Extensor Indicis

A

A: extend 2nd digit (MCP), may assist to extend wrist
PA: posterior ulna, interosseous membrane
DA: extensor expansion of 2nd digit
N: radial nerve (PIN) (C7, C8)

24
Q

Abductor Pollicis Longus

A

A: abduct and extend thumb (CMC)
PA: posterior surface of ulna, radius, interosseous membrane
DA: base of 1st metacarpal
N: radial nerve (PIN) (C7, C8)

25
Q

Extensor Pollicis Longus/Brevis

A

A: extend thumb (MCP, CMC), (longus) extend thumb (IP)
PA: (longus) posterior ulna and interosseous membrane, (brevis) posterior radius and interosseous membrane
DA: (longus) base of distal phalanx of thumb, (brevis) base of proximal phalanx of thumb
N: radial nerve (PIN) (C7, C8)

26
Q

Flexor Pollicis Brevis

A

A: flex thumb (MCP, CMC), assist in opposition of thumb
PA: flexor retinaculum, tubercles of scaphoid and trapezium
DA: base of proximal phalanx of thumb
N: (superficial head) median nerve (recurrent branch) (C8, T1), (deep head) ulnar nerve (deep branch) (C8, T1)

27
Q

Abductor Pollicis Brevis

A

A: abduct thumb (MCP, CMC), assist in opposition of thumb
PA: flexor retinaculum, tubercles of scaphoid and trapezium
DA: base of proximal phalanx of thumb
N: median nerve (recurrent branch) (C8, T1)

28
Q

Opponens Pollicis

A

A: thumb opposition … draw 1st metacarpal medially to center of palm and rotate it medially
PA: flexor retinaculum, tubercles of scaphoid and trapezium
DA: 1st metacarpal
N: median nerve (recurrent branch) (C8, T1)

29
Q

Flexor Digiti Minimi

A

A: flex proximal phalanx of 5th digit (MCP)
PA: flexor retinaculum, hook of hamate
DA: base of proximal phalanx of 5th digit
N: ulnar nerve (deep branch) (C8, T1)

30
Q

Abductor Digiti Minimi

A

A: abduct 5th digit (MCP)
PA: pisiform
DA: base of proximal phalanx of 5th digit
N: ulnar nerve (deep branch) (C8, T1)

31
Q

Opponens Digiti Minimi

A

A: oppose 5th digit (CMC)
PA: flexor retinaculum, hook of hamate
DA: medial border of 5th metacarpal
N: ulnar nerve (deep branch) (C8, T1)

32
Q

Adductor Pollicis

A

A: adduct thumb toward lateral border of palm
PA: (oblique head) base of 2nd and 3rd metacarpals, capitate, adjacent carpals, (transverse head) shaft of 3rd metacarpal
DA: base of proximal phalanx of thumb
N: ulnar nerve (deep branch) (C8, T1)

33
Q

Lumbricals

A

A: flex MCP and extend IPs of digits 2-5
PA: (1st and 2nd) lateral 2 tendons of FDP as unipennate, (3rd and 4th) medial 3 tendons of FDP as bipennate
DA: radial sides of extensor expansions of digits 2-5
N: (1st and 2nd) median nerve (digital branch) (C8, T1), (3rd and 4th) ulnar nerve (deep branch) (C8, T1)

34
Q

Palmar Interossei

A

A: adduct digits 2, 4, and 5 toward axial line, assist lumbricals w/ MCP flexion and IP extension
PA: palmar surfaces of 2nd, 4th, and 5th metcarpals (unipennate)
DA: bases of proximal phalanges, extensor expansions of digits 2, 4, and 5
N: ulnar nerve (deep branch) (C8, T1)

35
Q

Dorsal Interossei

A

A: abduct digits 2-4 from axial line, assist lumbricals w/ MCP flexion and IP extension
PA: adjacent sides of two metacarpals (bipennate)
DA: bases of proximal phalanges, extensor expansions of digits 2-4
N: ulnar nerve (deep branch) (C8, T1)

Anatomy 2 (11 decks)

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