dont fricken know
dont fricken know
dont fricken know
semilunar
The heart has valves for to allow blood flow in one direction only. They close as the blood passes each. Hooweestik.
semilunar
There are valves in the heart - and the larger blood vessels that stop the blood flowing backwards.
dont fricken know
man someone help me
Valves are needed to prevent blood flowing backwards into the heart.
The circulatory system has a series of one-way valves built in which prevents blood flowing backwards.
Blood coming out of the capillaries passes into vessels of increasing diameter as it flows back toward the heart. It is usually deoxygenated.
the semi lunar valves stop the blood flowing the wrong way !