Muscles-Antebrachium (Posterior)

Question 0

Extensor Carpi Radialis Longus

Answer 0

Origin: Lateral supracondylar ridge
Insertion: Dorsal aspect of base of 2nd metacarpal
Nerve: Radial

Question 1

Brachioradialis

Answer 1

Origin: Proximal 2/3 supraepicondylar ridge
Insertion: Distal radius proximal to styloid process
Nerve: Radial

Question 2

Extensor Carpi Radialis Brevis

Answer 2

Origin: Lateral epicondyle of humerus
Insertion: Dorsal aspect of base of 3rd metacarpal
Nerve: Deep branch of radial nerve

Question 3

Extensor Digitorum

Answer 3

Origin: Lateral epicondyle of humerus
Insertion: Extensor expansion of medial 4 fingers
Nerve: Posterior interosseous

Question 4

Extensor Digiti Minimi

Answer 4

Origin: Lateral epicondyle of humerus
Insertion: Extensor expansion of 5th finger
Nerve: Posterior interosseous

Question 5

Extensor Carpi Ulnaris

Answer 5

Origin: Lateral epicondyle of humerus, Posterior border of ulna
Insertion: Dorsal aspect of base of 5th metacarpal
Nerve: Posterior interosseous

Question 6

Supinator

Answer 6

Origin: Lateral epicondyle of humerus, Radial collateral and Ulnar ligaments, Ulnar crest
Insertion: Proximal 1/3 of radius
Nerve: Deep branch of radial nerve

Question 7

Extensor Indicis

Answer 7

Origin: Posterior surface of distal 1/3 of ulna, Interosseous membrane
Insertion: Extensor expansion of 2nd finger
Nerve: Posterior interosseous

Question 8

Abductor Pollicis Longus

Answer 8

Origin: Posterior surface of proximal 1/2 of ulna & radius, Interosseous membrane
Insertion: Base of 1st metacarpal
Nerve: Posterior interosseous

Question 9

Extensor Pollicis Brevis

Answer 9

Origin: Posterior surface of distal 1/3 of radius, Interosseous membrane
Insertion: Dorsal aspect of proximal phalanx of thumb
Nerve: Posterior interosseous

Question 10

Extensor Pollicis Longus

Answer 10

Origin: Posterior surface of middle 1/3 of ulna, Interosseous membrane
Insertion: Dorsal aspect of base of distal phalanx of thumb
Nerve: Posterior interosseous