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Heart valve.

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Q: What flap made of tissue that prevents blood from flowing backward is?
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Where are the bicuspid tricuspid pulmonic and aortic valves located?

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.


What is the name of the valve that opens to allow blood to travel from the right atrium to the right ventrcle?

The tricuspid valve at the bottom of the right atrium prevents the backward flow of blood.


What is tissue perfusion?

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.


Which type of tissue prevents toxins from entering the blood from the GI tract?

The marvelous Mucosa. If a toxin can make its way into the Submucosa, it has access to the circulatory system and lymphatic system there.


The vessel with valves that keep blood from flowing in the right direction?

Veins have valves to make sure that blood flows in only one direction.