Lecture14: Hands And Wrist

Question 1

How many carpal bones are there?

Answer 1

8

Question 2

Which muscle does not belong in the thenar group?

Answer 2

Adducter Pollicis

Question 3

What do all the thenar muscles have in their name?

Answer 3

Pollicis

Question 4

What do all the hypothenar muscles have in their name?

Answer 4

Digiti minimi

Question 5

How many lumbrical muscles are there?

Answer 5

4 for the medial 4 fingers

Question 6

What is the Lumbricsl muscles’ action?

Answer 6

They put the hand into writing position

Question 7

How many Palmar Interosseous muscles are there?

Answer 7

3

Question 8

What do the Palmar Interosseous muscles do?

Answer 8

They adduct the fingers towards the middle finger (PAD- palmar adduction)

Question 9

What do the Dorsal Interosseous muscles do?

Answer 9

The 4 of them abduct the fingers away from the middle finger (DAB- dorsal abduction)

Question 10

What supplies the Thenar muscles?

Answer 10

Median nerve

Question 11

What supplies the first and second lumbrical muscles?

Answer 11

Median nerve

Question 12

Why is infection limited in the fascial spaces of the palm?

Answer 12

Due to the loose connected tissue separated by fibrous septa

Question 13

Where is the the superficial palmar arch?

Answer 13

In the palm of the hand, superficial to the flexor tendons

Question 14

What does the Superficial palmar branch do?

Answer 14

Supplies the fingers

Question 15

What does the deep palmar branch do?

Answer 15

Gives branches to the superficial palmar branch

Question 16

Where is the deep flexor arch?

Answer 16

In the palm of the hand, deep to the flexor tendons

Question 17

Precisely how many fingers does the superficial palmar arch arterially supply?

Answer 17

Medial 3 1/2

Question 18

Precisely how many fingers does the radial artery supply?

Answer 18

The lateral 1 1/2 fingers

Question 19

Which 2 arteries supplies the anterior carpal arch?

Answer 19

Radial and ulnar

Question 20

What does the anterior carpal arch supply?

Answer 20

Carpal bones

Question 21

What does the dorsal carpal arch supply?

Answer 21

The 2 dorsal digital arteries

Question 22

What type of joint is the wrist joint?

Answer 22

Synovial ellipsoid

Question 23

What is the resulting issue due to wrist sprain?

Answer 23

In-ability to abduct the wrist