Anterior Compartment of Forearm

Question 1

pronator teres prox attach

Answer 1

humeral head: medical epicondyle of humerus
ulnar head: coronoid process, intermuscular septum

Question 2

pronator teres distal attach

Answer 2

middle of lateral surface of radius

Question 3

pronator teres axn

Answer 3

forearm pronation, weak elbow flexion

Question 4

pronator teres innervation

Answer 4

median n (C6, C7*)

Question 5

flexor carpi radialis (fcr) prox attach

Answer 5

medial epicondyle

Question 6

flexor carpi radialis (fcr) distal attach

Answer 6

base of 2nd metacarpal (sometimes into 3rd)

Question 7

flexor carpi radialis (fcr) axn

Answer 7

wrist flexion, radial deviation (abd)

Question 8

flexor carpi radialis (fcr) innervation

Answer 8

median n. (C6, C7*)

Question 9

palmaris longus prox attach

Answer 9

medial epicondyle

Question 10

palmaris longus distal attach

Answer 10

distal half of flexor retinaculum and palmar aponeurosis

Question 11

palmaris longus axn

Answer 11

assists wrist flexion, tightens palmar aponeurosis

Question 12

palmaris longus innervation

Answer 12

median n (C7, C8)

Question 13

flexor carpi ulnaris (FCU) prox attach

Answer 13

humeral head: medial epicondyle
ulnar head: olecranon and posterior border of ulna

Question 14

flexor carpi ulnaris (FCU) distal attach

Answer 14

pisiform, hook of hamate, base of 5th metacarpal

Question 15

flexor carpi ulnaris (FCU) axn

Answer 15

wrist flexion, ulnar deviation (add)

Question 16

flexor carpi ulnaris (FCU) innervation

Answer 16

ulnar nerve (C7, C8*)

Question 17

flexor digitorum superficialis (fds) prox attach

Answer 17

humeroulnar head: medial epicondyle, ulnar collateral ligament, coronoid process of ulna
radial head: superior 1/2 of anterior border of radius

Question 18

flexor digitorum superficialis (fds) distal attach

Answer 18

bodies of middle phalanges of medial 4 digits

Question 19

flexor digitorum superficialis (fds) axn

Answer 19

flexes MCP of fingers
flexes PIP of fingers
secondary axn: wrist flexion

Question 20

flexor digitorum superficialis (fds) innervation

Answer 20

median n. (C7,C8,T1)

Question 21

flexor digitorum profundus (fdp) prox attach

Answer 21

proximal 3/4 of medial and anterior surfaces of ulna & interosseous membrane

Question 22

flexor digitorum profundus (fdp) distal attach

Answer 22

base of distal phalanges of digits 2-5

Question 23

flexor digitorum profundus (fdp) axn

Answer 23

flexes dip of of digits 2-5
secondary axn: flexes PIP, MCP digits 2-5, and wrist flexion

Question 24

flexor digitorum profundus (fdp) innervation

Answer 24

digits 4-5: ulnar n (C8, T1)
digits 2-3: anterior interosseous n. (median n. branch; C8, T1)

Question 25

flexor pollicis longus (fpl) prox attach

Answer 25

anterior surface of radius and adjacent interosseous membrane

Question 26

flexor pollicis longus (fpl) distal attach

Answer 26

base of distal phalanx

Question 27

flexor pollicis longus (fpl) axn

Answer 27

flexes distal phalanx of thumb at IP
secondary axn: flexes proximal phalanx on metacarpal at MCP, flexes CMC, wrist flexion assist

Question 28

flexor pollicis longus (fpl) innervation

Answer 28

anterior interosseous n. (br of median n; C8*, T1)

Question 29

pronator quadratus prox attach

Answer 29

distal 1/4 of anterior surface of ulna

Question 30

pronator quadratus distal attach

Answer 30

distal 1/4 of anterior surface of radius

Question 31

pronator quadratus axn

Answer 31

pronation of forearm; deep fibers stabilize radius and ulna

Question 32

pronator quadratus innervation

Answer 32

anterior interosseous n. (br of median n C8*, T1)