Anatomy of the hand - Ch. 6

Question 1

Abductor pollicis brevis

Intrinstic, innervated by median nerve

Answer 1

palmar abduction

Question 2

Opponens pollicis

Intrinsic, innervated by median nerve

Answer 2

opposition

Question 3

Flexor pollicis brevis

Intrinsic, innervated by median nerve

Answer 3

thumb MCP flexion, deep head innervated by ulnar nerve

Question 4

Lumbricals (radial side)

Intrinsic, innervated by median nerve

Answer 4

MCP flexion and extension of IP joints

Question 5

Abductor digiti mini

Intrinsic, innervated by ulnar nerve

Answer 5

abduction of 5th digit

Question 6

Opponens digiti mini

Intrinsic, innervated by ulnar nerve

Answer 6

Opposition of 5th digit

Question 7

Flexor digiti mini

Intrinsic, innervated by ulnar nerve

Answer 7

Flexion of the MCP joint and opposition of the 5th digit

Question 8

Adductor

Intrinsic, innervated by ulnar nerve

Answer 8

Adducts CMC joint of thumb

Question 9

Lumbricals (ulnar side)

Intrinsic, innervated by ulnar nerve

Answer 9

MCP flexion and extension of IP joints of digits IV to V

Question 10

Palmar Interossei

Intrinsic, innervated by ulnar nerve

Answer 10

Adduction and assistance with MCP flexion and extension of IP joints for digits II-V

Question 11

Dorsal interossei

Intrinsic, innervated by ulnar nerve

Answer 11

Abduction and assists with MCP flexion and extension of IP joints of digits II-V

Question 12

Flexor digitorum superficialis

Extrinsic, innervated by median nerve

Answer 12

Flexion of PIP joints

Question 13

Flexor digitorum profundus

Extrinsic, innervated by median nerve

Answer 13

Flexion of DIP joints to digits II-III

Question 14

Flexor pollicis longus

Extrinsic, innervated by median nerve

Answer 14

Flexion of IP joint of thumb

Question 15

Flexor digitorum profundus

extrinsic, innervated by ulnar nerve

Answer 15

Flexion of DIP joints to digits IV-V

Question 16

Extensor digitorum communis

Extrinsic, innervated by radial nerve

Answer 16

extension of the MCP joints and contributes to extension of the IP joints

Question 17

Extensor digiti minimi

Extrinsic, innervated by radial nerve

Answer 17

Extension of MCP joint of 5th digit and contributes to extension of the IP joints

Question 18

Extensor indicus proprius

Extrinsic, innervated by radial nerve

Answer 18

extension of MCP joints of 2nd digit and contributes to extension of the IP joints

Question 19

Extensor pollicis longus

Extrinsic, innervated by radial nerve

Answer 19

extension of the IP joint of thumb

Question 20

Extensor pollicis brevis

Extrinsic, innervated by radial nerve

Answer 20

Extension of MCP and CMC joints of thumb

Question 21

Abductor pollicis longus

Extrinsic, innervated by radial nerve

Answer 21

Abduction and extension of CMC joint