anterior superficial compartment of forearm (flexion and pronation)

Question 1

pronator teres

Answer 1

• origin: medial supracondylar ridge, coronoid process of the ulna
• insertion: lateral surface of radius
• action: pronates the forearm (rotates radius on ulna)

Question 2

flexor carpi radialis

Answer 2

• origin: medial epicondyle of the humerus from common flexor tendon
• insertion: second and third metacarpals
• action: flexes the hand at wrist, aids abduction of hand

Question 3

palmaris longus

Answer 3

• origin: medial epicondyle of the humerus-common flexor tendon
• insertion: flexor retinaculum and palmar aponeurosis
• action: flexes the wrist and tightens aponeurosis

Question 4

flexor digitorum superficialis

Answer 4

• origin: humeroulnar head: common flexor tendon; radial head: middle 1/3 of radius
• insertion: shafts of the middle phalanges of digits 2-5
• action: flexes the metacarpophalangeal and proximal interphalangeal joints

Question 5

flexor carpi ulnaris

Answer 5

• origin: common flexor tendon & medial margin of olecranon and posterior border of ulna
• insertion: pisiform, hook of hamate, and base of 5th metacarpal
• action: flexes and adducts hand at wrist

Question 6

deep flexor region

Answer 6

• flexor digitorum profundus
• flexor pollicis longus
• pronator quadratus