upper extremity action and nerve cards

Question 1

erector spinae action and nerve

Answer 1

action - extend trunk and vertebral column
nerve - dorsal rami of cervical, thoracic and lumbar spinal nerves

Question 2

splenius action and nerve

Answer 2

action - extends neck and head (unilateral direction)
nerve - dorsal rami of cervical nerve

Question 3

spinotransverse action and nerve

Answer 3

action - extend trunk in bilateral action and rotate vertebral column in unilateral action
nerve - dorsal rami of spinal nerves

Question 4

serratus posterior inferior action and nerve

Answer 4

action - depresses ribs in expiration
nerve - intercostal nerves (9th. to 12th)

Question 5

trapezius muscle action and nerve

Answer 5

action - elevates and depresses shoulder, retracts scapula
nerve - spinal part of accessory nerve

Question 6

latissimus dorsi action and nerve

Answer 6

action - adducts, extends and medially rotates arm (humerus)
nerve - thoracodorsal nerve

Question 7

levator scapulae action and nerve

Answer 7

action - elevates the scapula
nerve - dorsal scapular nerve

Question 8

rhomboid minor action and nerve

Answer 8

action - retract the scapula
nerve - dorsal scapular nerve

Question 9

rhomboid major action and nerve

Answer 9

action - retract the scapula
nerve - dorsal scapular nerve

Question 10

levatores coastarum action and nerve

Answer 10

action - elevates ribs in inspiration
nerve - dorsal rami of thoracic nerves

Question 11

serratus posterior superior action and nerve

Answer 11

action - elevates ribs in inspiration
nerve - intercostal nerve (2nd to 5th)

Question 12

deltoid action and nerve

Answer 12

action - abduction of shoulder joint. helps in flexion, adduction, and medial rotation of shoulder joint
nerve - axillary nerve

Question 13

supraspinatus action and nerve

Answer 13

action - initiated abduction of shoulder joint to the extent of first 15 degrees
nerve - suprascapular nerve

Question 14

infraspinatus action and nerve

Answer 14

action - lateral rotator of shoulder joint
nerve - suprascapular nerve

Question 15

teres minor nerve and action

Answer 15

action- lateral rotator of humerus. abductor of shoulder joint
nerve - axillary nerve

Question 16

teres major action and nerve

Answer 16

action- medial rotator and adductor of humerus
nerve - lower subscapular nerve

Question 17

triceps brachii action and nerve

Answer 17

action - extensor of elbow joint
nerve - radial nerve

Question 18

aconeus muscle action and nerve

Answer 18

action - assists triceps in extending the elbow
nerve - radial nerve

Question 19

brachioradialis action and nerve

Answer 19

action - flexes elbow joint
nerve - radial nerve

Question 20

extensor carpi radialis longus action and nerve

Answer 20

action - extends and abducts the wrist
nerve - radial nerve

Question 21

extensor carpi radialis brevis action and nerve

Answer 21

action - extends and abducts the wrist
nerve - deep branch of radial nerve/posterior interosseous nerve (before piercing supinator)

Question 22

extensor digitorum action and nerve

Answer 22

action - extends the metacarpophalangeal, proximal and distal interphalangeal joints
nerve - deep branch of radial nerve

Question 23

extensor digiti minimi action and nerve

Answer 23

action - extends little finger
nerve - deep branch of radial nerve

Question 24

extensor carpi ulnaris action and nerve

Answer 24

action - extends and adducts the wrist
nerve - deep branch of radial nerve

Question 25

supinator action and nerve

Answer 25

action - acts as a supinator in extended elbow
nerve - deep branch of radial nerve before it passes through the muscle

Question 26

abductor pollicis longus action and nerve

Answer 26

action - abducts and extends the thumb
nerve - deep branch of radial nerve

Question 27

extensor pollicis brevis action and nerve

Answer 27

action - extends proximal phalanx of the thumb
nerve - deep branch of radial nerve

Question 28

extensor pollicis longus action and nerve

Answer 28

action - extends distal phalanx of the thumb
nerve - deep branch of radial nerve

Question 29

extensor indicis action and nerve

Answer 29

action - extends index finger
nerve - deep branch of radial nerve

Question 30

biceps brachii action and nerve

Answer 30

action - powerful supinator of the forearm. flexor of the elbow joint
nerve - musculocutaneous nerve

Question 31

coracobrachialis action and nerve

Answer 31

action - weak flexor of shoulder joint
nerve - musculocutaneous nerve

Question 32

brachialis action and nerve

Answer 32

action - flexor of the elbow joint
nerve - major part by musculocutaneous nerve, small lateral part by radial nerve

Question 33

palmaris longus action and nerve

Answer 33

action - weak flexor of the wrist
nerve - median nerve

Question 33

pronator teres action and nerve

Answer 33

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

Question 33

flexor carpi radialis action and nerve

Answer 33

action - flexor of wrist
nerve - median nerve

Question 34

flexor carpi ulnaris action and nerve

Answer 34

action - flexor and adductor of wrist
nerve - ulnar nerve

Question 35

flexor digitorum superficialis action and nerve

Answer 35

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

Question 36

flexor pollicis longus action and nerve

Answer 36

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

Question 37

flexor digitorum profundus action and nerve

Answer 37

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

Question 38

pronator quadratus action and nerve

Answer 38

action - principal pronator
nerve - median nerve

Question 39

palmaris brevis action

Answer 39

improves the grip by steadying the skin on the ulnar side

Question 40

lumbricals action

Answer 40

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

Question 41

palmar interossei action

Answer 41

PAD - adductors of the fingers

Question 42

dorsal interossei action

Answer 42

DAB - abductors of the fingers