This is the circulation of blood through the heart.
The blood flows into the 4 chambers of the heart.
Right Atrium
Left Atrium
Right Ventricle
Left Ventricle

Coranary circulation is the vessles that supply the heart itself with blood

When blood leaves the heart it passes through arteries.
From arteries blood enters arterioles and finally into capillaries.

These are the thinner aspects of the blood vessels. Capillaries allow blood or nutrients
to get into the tissues and cells.

Carbon dioxide and other wastes are collected into venules which flows into veins.
The blood is then returned to the heart.

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