Hand muscles

Question 1

Palmaris Brevis

Answer 1

Superficial branch of the ulnar nerve (C8,T1)

Improves grip

superficial palmar branches of ulnar artery

Question 2

Dorsal Interossei (hand)

Answer 2

deep branch of ulnar nerve (C8,T1)

Abduction of index, middle, and ring fingers at the metacarpophalangeal joints

Palmar metacarpal artery of deep palmar arch

Question 3

Palmar Interossei

Answer 3

deep branch of ulnar nerve (C8,T1)

adduction of the thumb, index, ring, and little fingers at the metacarpophalangeal joints

Palmar metacarpal artery of deep palmar arch

Question 4

Adductor Pollicis

Answer 4

deep branch of ulnar nerve (C8,T1)

adducts thumb

superficial palmar branches of radial artery

Question 5

Lumbricals (hand)

Answer 5

medial two by the deep branch of the ulnar nerve; lateral two by digital branches of the median nerve

flex metacarpophalangeal joints while extending interphalangeal joints

Palmar metacarpal artery of deep palmar arch

Question 6

Opponens Pollicis

Answer 6

recurrent branch of median nerve

Medially rotates thumb

superficial palmar branches of radial artery

Question 7

Abductor Pollicis Brevis

Answer 7

recurrent branch of median nerve

abducts thumb at metacarpophalangeal joint

superficial palmar branches of radial artery

Question 8

Flexor Pollicis Brevis

Answer 8

recurrent branch of median nerve

Flexes thumb at metacarpophalangeal joints

superficial palmar branches of radial artery

Question 9

Opponens digiti minimi

Answer 9

deep branch of ulnar nerve (C8,T1)

laterally rotates metacarpal V

deep palmar branches of ulnar artery

Question 10

Abductor Digiti minimi (hand)

Answer 10

deep branch of ulnar nerve (C8,T1)

abducts little finger at metacarpophalangeal joints

deep palmar branches of ulnar artery

Question 11

Flexor digiti minimi brevis (hand)

Answer 11

deep branch of ulnar nerve (C8,T1)

flexes little finger at metacarpophalangeal joints

deep palmar branches of ulnar artery