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Systemic Circulation (Blood Circulation)

Systemic circulation is the part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.

PubMed Health Glossary
(Source: Wikipedia)

About Circulation of the Blood

The systemic circulation provides the functional blood supply to all body tissue. It carries oxygen and nutrients to the cells and picks up carbon dioxide and waste products.

Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.

NIH - National Cancer Institute

(See the left ventricle and right atrium of the heart in the image below.)

Terms to know

Aorta
The largest artery in the body. It carries oxygen-rich blood away from the heart to vessels that reach the rest of the body.
Atria
The chambers of the heart, to which the blood returns from the circulation.
Capillaries
The smallest of the body's blood vessels. Oxygen and glucose pass through capillary walls and enter the cells. Waste products such as carbon dioxide pass back from the cells into the blood through capillaries.
Cardiac Valves (Heart Valves)
Any of the four heart valves that regulate the flow of blood through the chambers of the heart.
Deoxygenated Blood
Oxygen-poor blood.
Heart
The hollow, muscular organ that maintains the circulation of the blood.
Heart Ventricles
The lower right and left chambers of the heart.
Interventricular Septum
Interventricular septum is the stout wall separating the lower chambers (the ventricles) of the heart from one another.
Lungs
One of a pair of organs in the chest that supplies the body with oxygen, and removes carbon dioxide from the body.
Myocardium
The muscular substance of the heart; the middle of the three layers forming the outer wall of the human heart.
Oxygenated Blood
Oxygen-rich blood.
Pulmonary Artery
The pulmonary artery and its branches deliver blood rich in carbon dioxide (and lacking in oxygen) to the capillaries that surround the air sacs.
Pulmonary Circulation
The circulation of the blood through the lungs.
Pulmonary Veins
The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
Superior Vena Cava
The large vein that carries blood from the head, neck, arms, and chest to the heart.
Vena Cava
A large vein which returns blood from the head, neck and extremities to the heart.

Terms to know

Aorta
The largest artery in the body. It carries oxygen-rich blood away from the heart to vessels that reach the re...
Atria
The chambers of the heart, to which the blood returns from the circulation....
Capillaries
The smallest of the body's blood vessels. Oxygen and glucose pass through capillary walls and enter the cells...
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