16. Muscles of the hand

Question 1

Muscles: Superficial Palmar Hand

→ Identify

Answer 1

1. Abductor pollicis brevis muscle

• *2.** Flexor pollicis brevis muscle
• *3.** Abductor digiti minimi muscle
• *4.** Flexor digiti minimi brevis muscle

Question 2

Muscles: Deep Palmar Hand

→ Identify

Answer 2

• *1.** Opponens pollicis muscle
• *2.** Adductor pollicis muscle
• *3.** Opponens digiti minimi muscle

Question 3

Muscles: Hand and Fingers

→ Identify

Answer 3

1. Dorsal interosseous muscles

Question 4

Muscles: Hand and Fingers

→ Identify

Answer 4

2. Palmar interosseous muscles

Question 5

Muscles: Hand and Fingers

→ Identify

Answer 5

3. Lumbrical muscles

Question 6

The majority of the thenar muscles arise from (1)____, except for (2)____

Answer 6

1. the radial carpals
2. the adductor pollicis

Question 7

Identify 11 & 13

Answer 7

adductor pollicis with oblique (13) and transverse (11) heads

Question 8

Identify 11 & 13

→ O & I

Answer 8

adductor pollicis with oblique (13) and transverse (11) heads

• O: radial carpals
• I: entire length of the 3rd metacarpal

Question 9

What is the insertion site of thenar muscles?

Answer 9

one of the sesamoid bones at the carpometacarpal joint

→ expect opponens pollicis

Question 10

Identify 1. O & I

Answer 10

Opponens pollicis muscle

Origin (proximal): Radial carpals

Insertion (distal): the body of the 1st metacarpal

Question 11

The hypothenar muscles arise from (1)____and the insertion site is (2)____ or in the case of the opponens digiti minimi the (3)____ (figure D).

Answer 11

1. the ulnar carpals
2. the base of the 5th proximal phalanx
3. body of the 5th metacarpal

Question 12

There is no adductor for the little finger,

→ its role (adduction, obviously) will be provided by the ____ (muscle?)

Answer 12

ulnar palmar interosseous muscle.