Week 1 - Lesson 3 (Part 2)

Question 1

What arteries supply the hand with blood? (2)

Answer 1

1. Radial artery

2. Ulnar artery

Question 2

How do the radial and ulnar arteries communicate with each other? (2)

Answer 2

1. Single dorsal arch
2. 2 palmer arches
   - superficial and deep

Question 3

Which palmer arch is more proximal?

Answer 3

The deep arch

Question 4

Which palmer arch is the most dominant?

Answer 4

The superficial arch

Question 5

What does the superficial palmer arch give rise to?

Answer 5

The common digital arteries

Question 6

What do the common digital arteries give rise to?

Answer 6

Proper digital arteries

- which course down either side of the fingers

Question 7

Where do the common digital arteries and the proper digital arteries communicate?

Answer 7

Distally in the finger tips

Question 8

What 4 blood vessels does the brain receive its blood supply directly from? (2)

Answer 8

1. Paired internal carotid arteries
   - 2
2. Paired vertebral arteries
   - 2

Question 9

Where do the internal carotid and vertebral arteries enter the brain?

Answer 9

At the base of the skull

Question 10

How do the internal carotid and vertebral arteries communicate?

Answer 10

Through the circle of willis within the brain

Question 11

What are the 3 major branches that come off of the aortic arch?

Answer 11

1. Brachiocephalic
2. Left common carotid
3. Left subclavian arteries

Question 12

What does the brachiocephalic artery on the right side of the neck give rise to?

Answer 12

The right common carotid artery

Question 13

Where does the right common carotid artery course?

Answer 13

Superiorly towards the brain

Question 14

What does the left common carotid artery directly come off of on the left side of the neck?

Answer 14

The aortic arch

Question 15

Where does the left CCA course?

Answer 15

Superiorly toward the brain

Question 16

Where does the left CCA pass compared to the left sternoclavicular joint?

Answer 16

Posteriorly

Question 17

What are the CCAs in terms of their origins?

Answer 17

Asymmetrical

Question 18

How do the CCA both travel?

Answer 18

Toward the brain without branching

Question 19

When do both the CCA’s branch?

Answer 19

When they reach the level of the upper border of the thyroid cartilage

Question 20

What is it called right before the CCA’s bifurcate?

Answer 20

The bulb

Question 21

What does the CCA bifurcate into? (2)

Answer 21

1. Internal carotid artery
   - ICA
2. External carotid artery

Question 22

What does the ICA supply?

Answer 22

The brain with blood

Question 23

What does the ECA supply? (2)

Answer 23

1. Neck
2. Face

• with blood

Question 24

What kind of artery is the ICA?

Answer 24

Muscular artery

- because of its relevant size

Question 25

What kind of artery is the CCA?

Answer 25

Elastic artery

- because of its relevant size

Question 26

Where does the bulb usually occur near?

Answer 26

The submandibular

Question 27

What is the bulb usually continuous with?

Answer 27

The ICA

Question 28

What is the widest portion of the CCA?

Answer 28

The bulb

Question 29

What is the bulb of the CCA considered?

Answer 29

The proximal portion

Question 30

What is the bulb?

Answer 30

The zone of dilatation of the CCA to the level of the flow divider
- the junction of the ICA and ECA

Question 31

What is the flow divider?

Answer 31

The location of the carotid body and nerve complex of the carotid sinus

Question 32

How can you differentiate between the ICA and the ECA? (3)

Answer 32

1. ICA has no extra cranial branches
2. The ECA branches early after the bifurcation to give rise to the superior thyroid artery
   - most notably
3. The ECA branches many times along its course

Question 33

What is the most important way to differentiate between the ICA and the ECA?

Answer 33

Branches