Heart valve.
The tricuspid valve is located between the right atrium and right ventricle, and it's there because it prevents blood from flowing backward from the right ventricle to the right atrium. The tricuspid valve is located between the right atrium and right ventricle, and it's there because it prevents blood from flowing backward from the right ventricle to the right atrium.
The tricuspid valve at the bottom of the right atrium prevents the backward flow of blood.
Blood flow and tissue perfusion are NOT the same thing. An increase in blood flow does not always mean that there is a parallel increase in tissue perfusion. While blood flow is generally understood as an increase in the total amount of blood flowing into an anatomic structure or region, tissue perfusion is the amount of blood that actually flow through the capillaries of the vascular bed of that structure or region. The important thing to remember is that nutrients and oxygen are delivered to the cells via the capillaries.
The marvelous Mucosa. If a toxin can make its way into the Submucosa, it has access to the circulatory system and lymphatic system there.
Veins have valves to make sure that blood flows in only one direction.
a flap of tissue that prevants blood from flowing backward is
your skin of course!
valves in the veins
heart valves
the valves
valve
Venous valves .
valve
Venous valves .
Valves. Mitral and aortic.
Venous valves .
Blood is a constant whereabout in our bodies. As of such a frequent heartbeat exists within our system. Which causes the blood within our bodies to flow forward, in lamense terms it produces a very large push for the blood to distribute it's nutrients throughout the body and back within our heart and out again. This constant push is what prevents blood from flowing backwards in your veins.