3.4.6. Vasculature of the Hand

Question 1

Where does the Blood Supply to the Hand arise from?

Answer 1

The Anastomosis of:

1. The Radial Artery
2. The Ulnar Artery

Question 2

What does the Anastomosis of the Radial and Ulnar Arteries form?

Answer 2

1. Superficial Palmar Arch

2. Deep Palmar Arch

Question 3

What do the Superficial and Deep Palmar Arches provide?

Answer 3

Collateral Circulation in the Hand

Question 4

1. What does “Collateral Circulation in the Hand” mean?

2. What is the Advantage of this?

Answer 4

1. There are many Anastomosing Arteries in the Hand

2. It allows for the Hand to be Perfused, when Grasping / Applying Pressure

Question 5

1. Are the Majority of these Anastomosing Arteries in the hand are Superficial or Deep?
2. What is the Advantage of this?

Answer 5

1. Superficial

2. Allows for Heat Loss when needed

Question 6

What does the Radial Artery mainly contribute to?

Answer 6

1. Thumb

2. Lateral Side of the Index Finger

Question 7

What does the Ulnar Artery mainly contribute to?

Answer 7

1. Medial Side of the Index Finger

2. Rest of the Digits

Question 8

How does the Ulnar Artery enter the Hand?

Answer 8

1. Anteriorly to the Flexor Retinaculum

2. Laterally to the Ulnar Nerve

Question 9

What does the Ulnar Artery divide into, after entering into the Hand?

Answer 9

1. Superficial Palmar Arch Branch of the Ulnar Artery

2. Deep Palmar Arch Branch of the Ulnar Artery

Question 10

What main Arteries arises from the Superficial Palmar Arch Branch of the Ulnar Artery?

Answer 10

Common Palmar Digital Arteries

Question 11

What do the Common Palmar Digital Arteries supply?

Answer 11

The Digits

Question 12

What happens to the Superficial Palmar Arch Branch of the Ulnar Artery, after the 4 Common Palmar Digital Arteries have Branched off?

Answer 12

It Anastamoses with the Superficial Branch of the Radial Artery

Question 13

Where is the Superficial Palmar Arch located?

Answer 13

1. Anteriorly to the Flexor Tendons

2. Deep to the Palmar Aponeurosis

Question 14

How does the Radial Artery enter the Hand?

Answer 14

Dorsally, crossing the Floor of the Anatomical Snuffbox

Question 15

Where does the Radial Artery travel in the Hand?

Answer 15

After entering the Hand, it turns Medially and moves towards the Adductor Pollicis

Question 16

What happens to the Radial Artery, after entering into the Hand?

Answer 16

It Divides into:

1. Superficial Branch of the Radial Artery
2. Deep Branch of the Radial Artery

Question 17

What happens to the Superficial Branch of the Radial Artery?

Answer 17

It Anastomoses with the Superficial Palmar Arch Branch of the Ulnar Artery

Question 18

What happens to the Deep Branch of the Radial Artery?

Answer 18

It Anastomoses with the Deep Branch of the Ulnar Artery

Question 19

What is the main Blood Supply for the Superior Palmar Arch?

Answer 19

The Ulnar Artery

Question 20

What is the main Blood Supply for the Deep Palmar Arch?

Answer 20

The Radial Artery

Question 21

What does the Deep Plamar Arch give rise to?

Answer 21

5 Arteries which Supply the Digits

Question 22

How is the Venous Structure related to the Arterial Structure of the hand?

Answer 22

Venous Arches are associated with the Respective Arterial Arches