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What else can I help you with?
Why do air sacs need to have a rich supply of capillaries?
They need a lot of blood.
Do red blood cells have to squeeze through veins arteries or capillaries?
Capillaries, as they are the smallest blood vessels in the body, thus the need to "squeeze"
Why do capillaries need to be so thin?
so they can allow for gas exchange
Capillaries that have a incomplete lining are called?
continuous capillaries continuous capillaries
Why must capillaries have a greater surface area to volume ratio compared to arteries?
Capillaries are tiny blood vessels. They need to have a greater surface area to volume ratio because they need to diffuse oxygen quicker.
Why is capillaries narrow?
Capillaries are very small in size because they need to have a large surface area so they are able to transport blood all around the body. Blood cells must pass in single file through the capillaries as they are so small.
Where do arterioles direct blood?
Arterioles carry blood from larger arteries to capillaries. This blood is high in oxygen. Capillaries bring blood to cells which need oxygen for energy production.
Why is it critical to your cells to be near capillary?
Cells need to be near capillaries because capillaries carry blood which in turn brings food/fuel to the cells and removes waste products.
What structures connect the smallest arteries with the smallest veins?
Capillaries are the structures that connect arteries to veins.
What blood vessels surround the aveoli?
Capillaries The smallest of the blood vessels: capillaries.
What feeds the capillaries?
Arteries "feed" the capillaries while veins drain the capillaries.
Why are there capillaries in eyelids instead of arteries or veins?
capillaries are smaller than arteries and veins. they need to be small or it would look wierd with big buldges sticking out of your eye lids. :P
