blood vessels Flashcards
1
Q
4 types
A
capillaires, arteries, veins and arterioles
2
Q
arteries carry blood…
A
away from the heart
3
Q
arterioles are…
A
arteries that have divided into smaller vessels
4
Q
aterioles divide into….
A
capillaries
5
Q
capillaries join up to form….
A
veins
6
Q
veins carry blood…
A
towards the heart
7
Q
artery properties
A
thick wall small lumen outer layer=fibrous tissue thick layer of elastic tissue smooth muscle layer inner layer= very thin folded endothelial
8
Q
arterioles/arteries
A
arterioles have a higher proportion of muscle tissue and a lower proportion of elastic tissue.
the lumen in arterioles can contract to control bloodflow
9
Q
capillary properties
A
walls=single layer of endothelial cells, tiny gaps between cells to enable diffusion.
blood flow is slow
10
Q
capillaries carry…
A
waste away and oxygen=glucose towards organs
11
Q
vein properties
A
large lumen
thin walls
elastic tissue/smooth muscle tissue
contain valves
