Week 1 - Lesson 3 (Part 2) Flashcards
What arteries supply the hand with blood? (2)
- Radial artery
2. Ulnar artery
How do the radial and ulnar arteries communicate with each other? (2)
- Single dorsal arch
- 2 palmer arches
- superficial and deep
Which palmer arch is more proximal?
The deep arch
Which palmer arch is the most dominant?
The superficial arch
What does the superficial palmer arch give rise to?
The common digital arteries
What do the common digital arteries give rise to?
Proper digital arteries
- which course down either side of the fingers
Where do the common digital arteries and the proper digital arteries communicate?
Distally in the finger tips
What 4 blood vessels does the brain receive its blood supply directly from? (2)
- Paired internal carotid arteries
- 2 - Paired vertebral arteries
- 2
Where do the internal carotid and vertebral arteries enter the brain?
At the base of the skull
How do the internal carotid and vertebral arteries communicate?
Through the circle of willis within the brain
What are the 3 major branches that come off of the aortic arch?
- Brachiocephalic
- Left common carotid
- Left subclavian arteries
What does the brachiocephalic artery on the right side of the neck give rise to?
The right common carotid artery
Where does the right common carotid artery course?
Superiorly towards the brain
What does the left common carotid artery directly come off of on the left side of the neck?
The aortic arch
Where does the left CCA course?
Superiorly toward the brain
Where does the left CCA pass compared to the left sternoclavicular joint?
Posteriorly
What are the CCAs in terms of their origins?
Asymmetrical
How do the CCA both travel?
Toward the brain without branching
When do both the CCA’s branch?
When they reach the level of the upper border of the thyroid cartilage
What is it called right before the CCA’s bifurcate?
The bulb
What does the CCA bifurcate into? (2)
- Internal carotid artery
- ICA - External carotid artery
What does the ICA supply?
The brain with blood
What does the ECA supply? (2)
- Neck
- Face
- with blood
What kind of artery is the ICA?
Muscular artery
- because of its relevant size
What kind of artery is the CCA?
Elastic artery
- because of its relevant size
Where does the bulb usually occur near?
The submandibular
What is the bulb usually continuous with?
The ICA
What is the widest portion of the CCA?
The bulb
What is the bulb of the CCA considered?
The proximal portion
What is the bulb?
The zone of dilatation of the CCA to the level of the flow divider
- the junction of the ICA and ECA
What is the flow divider?
The location of the carotid body and nerve complex of the carotid sinus
How can you differentiate between the ICA and the ECA? (3)
- ICA has no extra cranial branches
- The ECA branches early after the bifurcation to give rise to the superior thyroid artery
- most notably - The ECA branches many times along its course
What is the most important way to differentiate between the ICA and the ECA?
Branches
