Muscles of the Hand

Question 1

How many total hand muscles are there?

Answer 1

20

Question 2

How many are innervated by the median n.?

Answer 2

5

Question 3

How many are innervated by the ulnar n.?

Answer 3

15

Question 4

What are the muscles of the thenar eminence?

Answer 4

Abductor pollicis brevis, flexor pollicis brevis, opponens pollicis mm.

Question 5

What nerve innervates the muscles of the thenar eminence?

Answer 5

Median nerve

Question 6

What are the muscles of the hypothenar eminence?

Answer 6

Abductor digiti minimi, flexor digiti minimi, opponens digiti minimi mm.

Question 7

What nerve innervates the hypothenar eminence muscles?

Answer 7

Ulnar n.

Question 8

What nerve innervates lumbricals 1 and 2?

Answer 8

Median nerve

Question 9

What nerve innervates lumbricals 3 and 4?

Answer 9

Ulnar nerve

Question 10

What are the actions of the lumbricals?

Answer 10

Flex at the metacarpophalangeal joints, extend at the interphalangeal joints.

Question 11

What are the only muscles innervated by the median nerve in the hand?

Answer 11

Lumbricals 1 and 2, thenar eminence muscles

Question 12

A- Adductor pollicis

Answer 12

Adduction of the thumb

Question 13

Inn- Adductor pollicis

Answer 13

ulnar nerve

Question 14

A- Palmar interosseus muscles

Answer 14

Adduction of the digits (PAD)

Question 15

A- Dorsal interosseous muscles

Answer 15

Abduction of the digits (DAB)

Question 16

What is the only hand muscle that would be tagged on a practical?

Answer 16

First dorsal interosseous muscle

Question 17

A- Palmaris brevis

Answer 17

None, protects the neurovasculature in the hand