Blood Vessels Flashcards
1
Q
Do arteries carry oxygenated or deoxygenated blood?
A
Oxygenated blood
2
Q
Small or large lumen?
A
Small
3
Q
Why do arteries have a small lumen?
A
To maintain high blood pressure
4
Q
Smooth inner lining in arteries is an advantage because…
A
There is less resistance to blood flow
5
Q
What mains arteries support and strength?
A
Collagen fibres
6
Q
Do veins carry oxygenated or deoxygenated blood?
A
Deoxygenated blood
7
Q
Why do veins have a large lumen?
A
To minimise the resistance of blood flow
8
Q
Veins have a _____ layer of muscle
A
Thinner
9
Q
Why do veins have valves
A
To prevent back flow
10
Q
Why are capillaries very small?
A
To be able to fit between cells
11
Q
Capillaries have a _____ lumen
A
Narrow
12
Q
why is the endothelium lining thin and one cell thick?
A
to maintain a short diffusion pathway and to fit between cells.
