Question

differentiate between arterien veim and capillaries

Answer 1



Arteries
Capillaries
Veins
1...Away from heart....
1...Wall only one cell thick-really thin -diffusion 
1...Blood into heart
2.....Mainly carry oxygenated blood
2.......smallest blood vessel
2.....Most carries de-oxygenated 
3....(a).High pressure

3...(c)Lower pressure 

features are only for Arteries and veins. . capillaries doesn't have.....
No valves 

Valves 
Thick outer wall (pumps a lot more blood)

Thin outer walls
Thick inner layer of muscle and elastic fibres

Thin inner layer 
Narrow central tube-small lumen(where the blood flows through)

Wide central tube -large lumen