supinatory-extensor muscles

Question 1

Extensor carpi ulnari

Answer 1

O - lateral epicondyle
I - base of 5th metacarpal

Question 2

extensor carpi radialis longus

Answer 2

O - lateral supracondylar ridge
I- base of 2rd metacarpal

Question 3

extensor capri radialis brevis

Answer 3

O - lateral epicondyle
I - base of 3rd metacarpal

Question 4

extensor digitorum communis

Answer 4

O - lateral epicondyle
I - extensor expansions of digits 2-5

Question 5

extensor digiti minimi

Answer 5

O - lateral epicondyle
I - extensor expansion of 5th digit

Question 6

extensor indicis

Answer 6

O - posterior ulna and interosseous membrane
I - extensor expansion of 2nd digit

Question 7

Abductor pollicis longus

Answer 7

O - posterior surfaces of the ulna, radius and interosseous membrane
I - base of 1 st metacarpal

Question 8

extensor pollicis brevis

Answer 8

O - posterior surfaces of the radius and interosseous membrane
I - base of proximal phalanx of thumb

Question 9

extensor pollicis longus

Answer 9

O - posterior surfaces of the ulna and interosseous membrane
I - base of distal phalanx of thumb