Arteries Flashcards
0
Q
Walls?
A
Thick
1
Q
Lumen?
A
Narrow
2
Q
More…(3)
A
- collagen
- elastic fibres
- smooth muscles
3
Q
NO…
A
Valves
4
Q
An artery has a thicker layer of collagen fibres because…
A
…the blood is under high pressure and the vessel needs to be durable.
5
Q
An artery has more smooth muscle and elastic fibres because…
A
…the blood is under higher pressure so needs to stretch and recoil more.
6
Q
What two arteries are the exceptions to the “no valves” fact?
A
- pulmonary artery
- aorta
7
Q
The artery has a small lumen….
A
…in order to maintain high blood pressure.
