Anterior Compartment

Question 1

Pronator Teres

Answer 1

O: medial epicondyle of humerus and coronoid process of ulna
I: middle of lateral surface of radius
A: pronates and flexes forearm
IN: Median n. (C6-C7)

Question 2

Flexor Carpi Radialis

Answer 2

O: medial epicondyle of humerus
I: base of 2nd metacarpal bone
A: flexes and abducts hand
IN: Median n. (C6-C7)

Question 3

Palmaris Longus

Answer 3

O: medial epicondyle of humerus
I: distal 1/2 of flexor retinaculum and palmar aponeurosis
A: flexes wrist and tightens palmar aponeurosis
IN: Median n. (C7-C8)

Question 4

Flexor Carpi Ulnaris

Answer 4

O: humeral head = medial epicondyle
ulnar head = olecranon and posterior border of ulna
I: pisiform bone, hook of hamate bone,and 5th metacarpal
A: flexes and adducts wrist
IN: Ulnar n. (C7-C8)

Question 5

Flexor Digitorum Superficialis

Answer 5

O: humeroulnar head = medial epicondyle + coronoid process
radial head = superior 1/2 of anterior border of radius
I: middle phalanges of digits 2-5
A: flexes proximal and middle phalanges of digits 2-5; flexes wrist
IN: Median n. (C7, C8, T1)

Question 6

Flexor Digitorum Profundus

Answer 6

O: proximal 3/4 medial/anterior surface of ulna and interosseus membrane
I: base of distal phalanges of digits 2-5
A: flexes distal phalanges of digits 2-5
IN: medial part = Ulnar n. (C8-T1)
lateral part = Median n. (C8-T1)

Question 7

Flexor Pollicis Longus

Answer 7

O: anterior surface of radius and interosseus membrane
I: base of distal phalanx of thumb
A: flexes phalanges of thumb
IN: anterior interosseus n. (C8-T1)

Question 8

Pronator Quadratus

Answer 8

O: distal 1/4 of ulna
I: distal 1/4 of radius
A: pronates forearm; assists interosseus membrane in stability
IN: anterior interosseus n. (C8-T1)