Anterior Compartment

Question 1

Pronator Teres

Answer 1

Origin: medical epicondyle
Insertion: middle of lat surface of radius
Innervation: median nerve
Action: pronate and flexes forearm

Question 2

Flexor carpi radialis

Answer 2

Origin: medial epicondyle of humerus

Insertion: 2 metacarpal

Innervation: median nerve

Action: flex and abduct wrist

Question 3

Palmaris longus

Answer 3

Origin: medial epicondyle

Insertion: flexor retinaculum and palmar aponeurosis

Innervation: median nerve

Action: flexes hand at wrist. Tightens palmar aponeurosis

Question 4

Flexor digitorum superficialis

Answer 4

Origin: medial epicondyle of humerus

Insertion: middle phalanges of medial four digits

Innervation: median nerve

Action: flexes middle phalanges at PIP joint

Question 5

Flexor carpi ulnaris

Answer 5

Origin: medial epicondyle

Insertion: 5th metacarpal

Innervation: ulnar nerve

Action: flexes and adducts wrist

Question 6

Flexor digitorum profundus

Answer 6

Origin: medial and ant surface of ulna

Insertion: distal phalanges of medial 4 digits

Innervation: median nerve (lat part-last 2 digits) ulnar nerve (medial part- medial 2 digits)

Action: flexes distal phalanges at DIP joints

Question 7

Flexor pollicus (thumb) longus

Answer 7

Origin: ant radius and interphase us membrane

Insertion: distal phalanx of thumb

Innervation: median nerve

Function: flexes phalanges of thumb

Question 8

Pronate quadratus

Answer 8

Origin: distal ant ulna

Insertion: distal ant radius

Innervation: median nerve

Action: primates forearm