Blood vessels Flashcards
1
Q
What are the 3 types of blood vessels?
A
Veins
Arteries
Capillaries
2
Q
What do arteries do?
A
Carry oxygenated blood away from the heart.
3
Q
How are arteries adapted?
A
They have thick walls allowing them to cope with high pressure
They have elastic fibres allowing them to stretch and spring back
4
Q
What do capillaries do?
A
They exchange substances between the blood and body cells.
5
Q
How are capillaries adapted?
A
They have thin walls to increase the rate of diffusion.
6
Q
What do veins do?
A
Carry blood back to the heart.
7
Q
How are veins adapted?
A
They have thin walls as the blood is at a lower pressure
Large lumen to help blood flow despite low pressure
Valves to prevent the back flow of blood
