shape of RBCs?
biconcave
3 features of veins
thin walls
large lumen
valves
3 features of arteries
thick walls
thick muscular tissue
small lumen
what do capillaries do?
allow diffusion of substances from blood to cells or back
double circulatory features?
deoxygenated and oxygenated
what do statins help do?
reduce cholesterol
why can a bypass help
extra capacity to deliver oxygen
translocation
movement of sugar in plants
transpiration
loss of water through stomata