Hand & Finger Actions

Question 1

Abducts thumb at carpometacarpal joint

Answer 1

Abductor pollicis longus
Extensor pollicis brevis

Question 2

Extends thumb at carpometacarpal joint

Answer 2

Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus

Question 3

Extends phalanges at metacarpophalangeal joint

Answer 3

Extensor digitorum

Question 4

Extends phalanges at interphalangeal joint

Answer 4

Extensor digitorum

Question 5

Extends digit at metacarpophalangeal joint

Answer 5

Extensor digiti minimi (5th)
Extensor indicis (2nd)

Question 6

Extends digits at interphalangeal joint

Answer 6

Extensor digiti minimi (5th)
Extensor indicis (2nd)

Question 7

Extends thumb at metacarpophalangeal joint

Answer 7

Extensor pollicis brevis
Extensor pollicis longus

Question 8

Extends thumb at the interphalangeal joint

Answer 8

Extensor pollicis longus

Question 9

Flexion of digits at the metacarpophalangeal joint

Answer 9

Flexor digitorum profundus (digits 2-5)
Flexor digitorum superficialis

Question 10

Flexion of digits at interphalangeal joint

Answer 10

Flexor digitorum profundus (digits 2-5) (distal & proximal interphalangeal joints)
Flexor digitorum superficialis (proximal interphalangeal joints)

Question 11

Flexes the thumb at metacarpophalangeal joint

Answer 11

Flexor pollicis longus

Question 12

Flexes thumb at interphalangeal joint

Answer 12

Flexor pollicis longus

Question 13

Tenses palmar fascia

Answer 13

Palmaris longus