Cat Muscles - Forearm Muscles

Question 1

Extensor carpi ulnaris

Answer 1

Origin: Lateral epicondyle of humerus & semilunar notch of the ulna
Insertion: Proximal end of 5th metacarpal
Action: Extends fifth digit and ulnar side of wrist

Question 2

Extensor digitorun lateralis

Answer 2

Origin: Lateral surface of humerus above lateral epicondyle
Insertion: Three of four digits
Action: Extends the digits

Question 3

Extensor digitorum communis

Answer 3

Origin: Lateral surface of humerus above lateral epicondyle
Insertion: Three or four digits
Action: Extends the digits

Question 4

Extensor carpi radialis

Answer 4

Origin: Humerus
Insertion: 2nd and 3rd metacarpals
Action: Extends hand

Question 5

Flexor carpi radialis

Answer 5

Origin: Medial epicondyle of humerus
Insertion: 2nd and 3rd metacarpals
Action: Flexes hand

Question 6

Pronator teres

Answer 6

Origin: Medial epicondyle of humerus
Insertion: Radius
Action: Rotates radius to prone position

Question 7

Palmaris longus

Answer 7

Origin: Medial epicondyle of humerus
Insertion: Pads of palm and phalanges
Action: Flexes digits

Question 8

Flexor profundum digitorum

Answer 8

Origin: Ulna and humerus
Insertion: Basal phalanges
Action: General flexing of fingers

Question 9

Flexor carpi ulnaris

Answer 9

Origin: Medial epicondyle of humerus (medial head), Olecranon process of ulna (ulnar head)
Insertion: Pisiform bone of wrist
Action: Flexes ulnar side of wrist

Question 10

Branchioradialis

Answer 10

Origin: Middle of humerus
Insertion: Lower end of radius and adjacent ligaments
Action: Rotates hand to supine position