Muscles Of Thumb And Hand

Question 1

Abductor pollicis brevis (Origin)

Answer 1

Base of Mc1 (thenar eminence)

Question 2

Abductor pollicis brevis (action)

Answer 2

Abducts and flexes thumb

Question 3

Opponens pollicis (origin)

Answer 3

Thenar emienence

Question 4

Opponens pollicis (action)

Answer 4

Opposes the thumb to the finger tips

Question 5

Dorsal interossei (origin)

Answer 5

Link sides of the metacarpal bone with extensor aspects of fingers

Question 6

Dorsal interossei (action)

Answer 6

Spreads fingers, helps the forefinger to oppose the thumb

Question 7

Abductor digiti minimi (origin)

Answer 7

Forms fleshy border to the ulnar side of hand, used as a landmark for SI 3

Question 8

Abductor digiti minimi (action)

Answer 8

Abducts little finger