forearm, wrist

Question 1

flexor carpi radialis

Answer 1

innervation: median nerve, insertion: base of 2nd and 3rd metacarpals origin: medial epicondyle of humerus blood supply: radial artery action: flexion and abduction of wrist/ hand

Question 2

flexor carpi ulnaris

Answer 2

innervation: ulnar nerve insertion: pisiform, hook of hamate, 5th metacarpal origin: medial epicondyle of humerus, olecranon of ulna blood supply: posterior ulnar recurrent artery action: flexes and adducts wrist

Question 3

flexor digitorum superficialis

Answer 3

innervation: median nerve insertion: middle phalanges of digits 2-5 origin: medial epicondyle of humerus, ant surface of radius. blood supply: ulnar and radial arteries. action: flexion of fingers (MIP and PIP joints) and wrist

Question 4

pronator teres

Answer 4

innervation: median nerve insertion: middle lateral surface of radius origin: medial epicondyle of humerus and coranoid process of ulna, blood supply: anterior interosseus artery action: pronation of forearm

Question 5

palmaris longus

Answer 5

innervation: median nerve insertion: palmar aponeurosis, flexor retinaculum origin: medial epicondyle of humerus, blood supply: posterior ulnar recurrent artery, action: flexion of wrist, tightens palmar aponeurosis

Question 6

flexor pollicis longus

Answer 6

innervation: median insertion: distal phalanx of thumb. origin: radius blood supply: anterior interosseus artery action: flexion of DIP of thumb

Question 7

flexor digitorum profundus

Answer 7

innervation: ulnar and median insertion: distal phalanges of digits 2-5 origin: ulna blood supply: anterior interosseus artery action: flexion of wrist and fingers (MP, PIP, DIP joints)

Question 8

pronator quadratus

Answer 8

innervation: median nerve insertion: distal radius, origin: distal ulna blood supply: anterior interosseus artery action: pronation of hand and forearm

Question 9

brachioradialis

Answer 9

innervation: radial nerve insertion: lateral supracondylar ridge of humerus, origin: styloid process of radius blood supply: radial recurrent artery, action: flexion of forearm, semi pro/supination

Question 10

extensor carpi radialis brevis

Answer 10

innervation: deep brach of radial nerve insertion: base of third metacarpal origin: lateral epicondyle of humerus blood supply: radial/recurrent artery action: extends and abducts wrist

Question 11

extensor carpi radialis longus

Answer 11

innervation: radial nerve insertion: base of 2nd metacarpal origin: lateral supracondylar ridge of humerus blood supply: radial recurrent and radial artery, action: extension of wrist and radial deviation

Question 12

extensor carpi ulnaris

Answer 12

innervation: deep branch of the radial nerve insertion: base of 5th metacarpal origin: lateral epicondyle of humerus and posterior border of ulna blood supply: posterior interosseus artery action: extension and ulnar deviation of wrist

Question 13

extensor digiti minimi

Answer 13

innervation: deep branch of radial nerve insertion: base of 5th distal phalanx origin: lateral epicondyle of humerus blood supply: posterior interosseus artery action: extension of 5th finger and wrist

Question 14

extensor digitorum

Answer 14

innervation: deep branch of radial nerve insertion: bases of phalanges 2-5 origin: lateral epicondyle of humerus blood supply: posterior interosseus artery actions: extension of fingers and wrist

Question 15

supinator

Answer 15

innervation: deep branch of radial nerve insertion: lateral surface of proximal radius origin: lateral epicondyle of humerus and olecranon process of ulna blood supply: posterior interosseus artery action: supination of forearm

Question 16

abductor pollicis longus

Answer 16

innervation: deep branch of radial nerve insertion: base of 1st metacarpal origin: posterior ulna and interosseus membrane blood supply: posterior interosseus artery action: abduction/extension of thumb

Question 17

extensor indicis

Answer 17

innervation: deep branch of radial artery insertion: second metacarpal origin: posterior ulna blood supply: posterior interosseus artery action: extension of index finger

Question 18

extensor pollicis brevis

Answer 18

innervation: deep brach of radial nerve insertion: proximal phalanx of thumb origin: posterior radius blood supply: posterior interosseus artery action: extends thumb

Question 19

extensor pollicis longus

Answer 19

innervation: deep branch of radial nerve insertion: distal phalanx of thumb origin: posterior ulna blood supply: posterior interosseus artery action: extension of thumb

Question 20

lumbericals

Answer 20

innervation: 2nd and 3rd digits are medial, 4th and 5th digits are ulnar insertion: distal phalanges, extensor expansion hood, origin: tendons of the flexor digitorum profundus blood supply: common branches of the superficial palmar arch action: simultaneous flexion and extension of MP and IP joints

Question 21

interossei

Answer 21

innervation:deep branch of ulnar nerve . insertion: proximal phalanges, origin: metacarpals blood supply: deep palmar arch action: dorsal abduction , palmar adduction, dorsal adduction for third digit

Question 22

opponens pollicis

Answer 22

innervation: recurrent motor brand of median nerve insertion: lateral aspect of 1st metacarpal origin: trapezium and flexor retinaculum blood supply: superficial palmar arch action: opposition and flexion of thumb

Question 23

flexor pollicis brevis

Answer 23

innervation: recurrent motor branch of median nerve insertion; base of proximal phalanx of thumb origin: trapezium, scaphoid, flexor retinaculum blood supply: superficial palmar arch action: flexion of thumb

Question 24

abductor pollicis brevis

Answer 24

innervation: recurrent motor branch of median nerve insertion: lateral aspect of base of proximal phalanx of thumb origin: trapezium and flexor retinaculum blood supply: superficial palmar arch action: abduction of thumb