gross anatomy of upper limbs 2 Flashcards

1
Q

pectoralis major action and nerve

A

action - medial rotation and adduction of shoulder joint. flexion of shoulder joint.
nerve - medial and lateral pectoral nerve

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2
Q

pectoralis minor action and nerve

A

action - protracts scapula along with serratus anterior
nerve - medial and lateral pectoral nerve

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3
Q

serratus anterior action and nerve

A

action - protracts the scapula
nerve - long thoracic nerve

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4
Q

biceps brachii action and nerve

A

action - powerful supinator of the forearm
nerve - musculocutaneous nerve

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5
Q

coracobrachialis action and nerve

A

action - weak flexor of shoulder joint
nerve - musculocutaneous nerve

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6
Q

brachilais action and nerve

A

action - flexor of elbow joint
nerve - musculocutaneous nerve & small lateral part of radial nerve

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7
Q

pronator teres action and nerve

A

action - pronator of forearm, weak flexor of the elbow joint
nerve - median nerve

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8
Q

flexor carpi radialis action and nerve

A

action - flexor of wrist
nerve - median nerve

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9
Q

flexor carpi ulnaris action and nerve

A

action - flexor and adductor of wrist
nerve - ulnar nerve

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10
Q

palmaris longus action and nerve

A

action - weak flexor of the wrist
nerve - median nerve

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11
Q

flexor digitorum superficialis action and nerve

A

action - flexion of the proximal interphlangeal joint
nerve - median nerve

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12
Q

flexor pollicis longus action and nerve

A

action - flexor of the thumb
nerve - median nerve (ant interosseous branch)

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13
Q

flexor digitorum profundus action and nerve

A

action - flexor of distal interphalangeal joint
nerve - medial part = ulnar nerve, lateral part = median nerve

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14
Q

pronator quadratus action and nerve

A

action - principal pronator
nerve - median nerve

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15
Q

role of intrinsic muscles of the hand

A

control precise movements of metacarpals and fingers

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16
Q

thenar eminence (ball of the thumb)

A

flexor pollicis brevis, abductor pollicis brevis and opponens pollicis

17
Q

hypothenar eminence (ball of the little finger)

A

flexor digiti minimi, abductor digiti minimi, and opponens digiti minimi

18
Q

midpalmar muscles

A

adductor pollicis, lumbricals, palmar and dorsal interossei

19
Q

palmaris brevis action

A

improves the grip by steadying the skin on the ulnar side

20
Q

lumbricals action

A

flexion of the MP joints and extension of the PIP and DIP

21
Q

palmar interossei action

A

PAD - adductors of the fingers

22
Q

dorsal interossei action

A

DAB - abductors of the fingers

23
Q

which intricsince muscles are supplied by the ulnar nerve

A

all except thenar muscles and 1st and 2nd lumbricals which are supplied by median nerve

24
Q

adductor pollicis nerve supply

A

median and ulnar nerves

25
Q

palmar aponeurosis

A

protects the underlying long flexor tendons from bow-stringing

26
Q

musculocutaneous nerve derives from what cord

A

lateral cord

27
Q

what muscle does the musc. nerve pierce

A

coracobrachialis and descends between biceps and brachialis

28
Q

what does the musc. nerve continue as below the elbow

A

lateral cutaneous nerve of the forearm

29
Q

what cord does the ulnar nerve derive from

A

medial cord

30
Q

what cord does the median nerve derive from

A

medial and lateral cord
enters the palm deep to the flexor retinaculum

31
Q

muscles that cross the shoulder joint to insert on and move the humerus

A

pectoralis major, latissimus dorsi, deltoid, supraspinatus, infraspinatus, teres minor, subscapularis, coracobrachialis, teres major

32
Q

bursae in relation to shoulder joint

A

subscapular bursa
infrascapular bursa
subacromial bursa
synovial sheath around the long tendon of biceps

33
Q

bursae in relation to elbow joint

A

btwn triceps tendon and capsule of the joint
subcutaneous bursa of olecranon process
btwn biceps tendon and radial tuberosity