In humans and mammals, the heart.
We breathe in oxygen, which is released by trees and plants. Lungs fill with oxygen and is picked up by the blood in the capillaries of the alveoli. The blood travels to the heart via the pulmonary vein where it is pumped to every part of the body.
Heart, arteries, veins, and capallaries.
Heart,arteries and veins...
The heart is the only organ in the circulation system. The circulation system also consists of blood vessels (veins, arteries and capillaries).
-Heart
-Lungs
-Muscles
-valves
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a curtain
the kidney is the major organ that filters the waste blood
The brain.
Perfusion is the circulation of blood within an organ or tissue in adequate amounts to meet the cell's current needs.
Two ways of classifying organs into organ system is to see their main Major function and as well as their major organ.
a curtain
pancreas
heart
I was looking for the answer to this too.
lungs
Blood flow is a term that refers to the circulation of blood through an organ or structure. Another term often used is microcirculation.
Circulation is the pumping of blood and oxygen throughout your body. Your heart is the main organ in this process. Without the circulation system, you could not function.
The Heart
The lungs
every organ of fishes have a pathway of blood , so the pathway of circulation of fishes are depend on how many organ they have because not all the fish have the same structure some of them may have the organ which others dont... hope to help
placenta
There is no such thing as A major key for organ. The organ is a C melody instrument, just like a piano.