Yes. It makes two circuits (circles), from the heart to the lungs, back to the heart, to the body, and back to the heart again.
"It is the whole body incuding the way of the blood flow."
always away from the heart supplying blood to the body
Yes, reduced blood flow to the skin raises body temperature. The skin provides a way for excess heat to exit, and so increased blood flow to the skin increases heat loss and decreases body temperature.
The valves in the heart act as one-way switches that allow blood to only flow one way. So every time the contracts, the blood flows out and into the lungs or the body, depending on which side the blood is circulating through.
Alcohol can temporarily increase blood flow by dilating blood vessels, but excessive alcohol consumption can have negative effects on the cardiovascular system and overall health. It is not recommended as a way to improve blood flow.
Valves control the flow of blood. Without them blood could flow backwards.--------------------------Yes, true. Valve would maintain one way traffic for blood right from the heart and to outside parts of the body and form outside to the heart.
When they are working properly, the four valves of the heart ensure one-way blood flow. The atrioventricular valves prevent backflow into the atria, and the semilunar valves prevent backflow into the ventricles.
It is important for blood to flow in one direction in the heart because blood can't flow backwards because it has oxygen rich blood and poor oxygen rich blood and these to types of blood cannot mix :)
Valves control the flow of blood. Without them blood could flow backwards.--------------------------Yes, true. Valve would maintain one way traffic for blood right from the heart and to outside parts of the body and form outside to the heart.
There are valves in the blood vessels (like a one-way door) - that stop the blood flowing backwards.
In the bodies blood system, they prevent back flow of the blood (one way valves) .
The natural flow of the blood stream in the human body. (ie: pressure, resistance)