CAPILLARIESCapillaries are the smallest of all blood vessels and form the connection between veins and arteries. As arteries branch and divide into arterioles and continue to reduce in size as they...
Veins are blood vessels that transport deoxygenated blood to the heart at low pressure. The structure of the vein is adapted in several ways to serve this purpose.
The vein has thinner walls than...
Arteries have thicker walls than veins because they are carrying blood away from the heart and so, in a sense, are working harder. Veins have thinner walls and contain valves to stop blood flowing...