Muscles Acting on the Wrist and Hand Anterior flexor compartment

Question 1

Palmaris Longus

Answer 1

O: Medial epicondyle of the humerus
I: Palmar aponeurosis
A: Flex wrist
N: Median nerve

Question 2

Flexor carpi ulnaris

Answer 2

O: Medial epicondyle of the humerus and ulna
I: Fifth metacarpal and pisiform and hammate
A: Flex wrist, adducts hand
N: Ulnar nerve

Question 3

Flexor carpi radialis

Answer 3

O: Medial epicondyle of the humerus
I: Second and third metacarpal
A: Flex wrist, abducts hand
N: Median nerve

Question 4

Flexor digitorum superficialis

Answer 4

O: Medial epicondyle of the humerus, ulna, and radius
I: Phalanges of fingers 2-5
A: Flexes wrist and middle phalanges of fingers 2-5
N: Median nerve

Question 5

Flexor digitorum profundus

Answer 5

O: Ulna
I: Phalanges of fingers 2-5
A: Flexes distal and proximal interphalangeal joint, metacarpophalangeal joint, and wrist
N: Median (lateral half) and ulnar (medial half) nerve

Question 6

Flexor pollicic longus

Answer 6

O: Radius
I: Thumb
A: Flexes distal phalanx of the thumb
N: Median nerve