Forearm and Hand

Question 1

Flexor carpi radialis

Answer 1

Originates on medial epicondyle of humerus. Inserts on radial carpals. Flexes wrist, radially deviates.

Question 2

Flexor carpi ulnaris

Answer 2

Originates on medial epicondyle of humerus. Inserts on pisiform and hook of hamate. Flexes wrist, ulnar deviation

Question 3

Pronator teres

Answer 3

Originates on medial epicondyle. Inserts on lateral radius. Pronates.

Question 4

Flexor digitorum superficialis

Answer 4

Originates on the medial epicondyle and coronoid process. Inserts on middle phalanges of metacarpals 2-5.

Question 5

Palmaris longus

Answer 5

Originates on medial epicondyle. Inserts on palmar aponeurosis. Flexes wrist.

Question 6

Thenar muscles

Answer 6

Thumb side.

Opponens pollicis, abductor pollicis brevis, flexor pollicis brevis

Question 7

Opponens pollicis

Answer 7

Originates on trapezium. Inserts on 1st metacarpal. Opposes thumb (rotates 1st metacarpal over)

Question 8

Abductor pollicis

Answer 8

Originates on scaphoid and trapezium. Inserts on proximal phalanx of thumb. Abducts thumb (Raises ventrally)

Question 9

flexor pollicis brevis

Answer 9

Originates on capitate and trapezium. Inserts on proximal phalanx of thumb. Flexes thumb (Raises laterally)

Question 10

Hypothenar Muscles

Answer 10

Pinky Side

Opponens digiti minimi, Abductor digiti minimi, Flexor digiti minimi brevis

Question 11

Opponens digiti minimi

Answer 11

Originates on hook of hamate, inserts on 5th metacarpal. Draws metacarpal in palmar direction (Opposition).

Question 12

Abductor digiti minimi

Answer 12

Originates on pisiform bone. Inserts on 5th proximal phalanx. Abducts and flexes MCP joint of middle finger.

Question 13

Flexor digiti minimi brevis

Answer 13

Originates on hook of hamate, flexor retinaculum. Inserts on 5th proximal phalanx. Flexes MCP joint of little finger.

Question 14

Radial a.

Answer 14

Artery that runs on lateral side of arm. Branch of brachial artery.

Question 15

Ulnar a.

Answer 15

Artery that runs down the medial side of arm. Branch of brachial artery.

Question 16

Superficial palmar arch

Answer 16

Anastamosis of radial and ulnar artery located on the palm

Question 17

Common digital arteries

Answer 17

Arteries that run between metacarpals to vascularize the fingers

Question 18

Radial n.

Answer 18

Nerve that runs along the lateral side of the arm. Branch of posterior cord. Innervates posterior side of thumb

Question 19

Ulnar n.

Answer 19

Nerve that runs along the medial side of the arm. Branch of the medial cord. Innervates anterior side of the lateral half of the 4th finger and the 5th finger.

Question 20

Recurrent Median (thenar) n.

Answer 20

Nerve that innervates the thenar muscles

Question 21

Flexor retinaculum

Answer 21

Transverse carpal ligament that borders the carpal tunnel.

Question 22

Anatomical snuff box (Borders and structures within)

Answer 22

Borders: Extensor pollicis longus dorsally, Extensor pollicis brevis ventrally

Structures within: Dorsal Radial Artery and Superficial radial nerve

Pulse Point!

Question 23

Palmar carpal ligament

Answer 23

Ligament just proximal to the flexor retinaculum. Ulnar nerve and artery run though this but NOT flexor retinaculum.

Question 24

Metacarpal phalangeal joint

Answer 24

(MCP) joint between metacarpal and proximal phalanx.