The arterial and capillary walls are incredibly strong. This is true otherwise you would be bleeding just by tapping yourself.
arterial walls has smooth muscle and elastic fibers (strong and flexible) and capillaries are made up of a single layer of endothelial cells (thin).
arterial
heart
arterial end
to ignorant to answer
only metabolic wastes out of the capillary
Hydrostatic.
The expansion and contraction of the arterial walls is the pulse.
becayse
atherosclerosis.
500
they have skinny walls