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Their functions are associated with removing wastes from each body cell.

Two main types of blood vessels functioning in the circulatory system of our bodies are arteries and veins. Both arteries and veins cooperate for transporting blood throughout the body, aiding to oxygenate, and to deoxygenate every cell with every heartbeat. Arteries carry oxygenated blood from the heart to various body parts and body tissues whereas veins carry deoxygenated blood from various parts of the body and tissues to the heart to re-oxygenate. Their functions are associated with removing wastes from each body cell. [Image Will be Uploaded Soon]

Blood vessels that carry blood away from the heart to other parts of the body are called arteries. These are tube-like shaped and form branches called arterioles that reach tissues and organs. While heart contraction occurs, arteries pump blood to all the body parts. Aorta is the largest artery in the human body that is attached to the left ventricle of the heart. An artery that differs from the rest and is located attaching to the right ventricles is Pulmonary Artery as it carries low oxygen blood to the lungs where it further branches into capillaries and arterioles. It helps the blood to take up oxygen before returning to the heart via a pulmonary vein. The Three Types of Arteries and Arteries Functions are:

Blood vessels that carry deoxygenated blood from body parts or tissues back to the heart are called veins. Like arteries, these are an important part of our circulatory system but have thinner walls than arteries. Thinnest veins are called venules that receive blood from the capillaries and deliver it to the larger veins. The largest vein in the human body is the superior and inferior vena cava that directly drain into the right atrium of the heart. There are Three Different Types of Veins, Namely-

There are three different layers of arteries and veins, namely-

The largest artery in the human body is Aorta where the left ventricle pumps blood to distribute blood to the whole body. It breaks into arteries and then to fine structures called arterioles. Its huge importance lies in the fact that it directly connects to the heart and is the initial point for blood transportation to the entire body system.

The largest vein in the human body is the inferior vena cava, which carries low oxygen (deoxygenated) blood from the lower half portion of the body back up to the heart.

Arteries are the blood vessels that carry blood with high oxygen amounts from the heart to all other parts, tissue, and organs of the body. On the other hand, veins are the blood vessels that carry blood with low oxygen amounts from various body parts, organs, and tissues to the heart. The exceptions for both the categories are pulmonary arteries and pulmonary veins that function opposite to the normal arteries and veins.

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Arteries carry pure and oxygenated blood which is rich in nutrients, except the pulmonary artery.

Veins carry impure, deoxygenated blood except for the pulmonary vein.

Arteries have rigid, highly muscular, and thicker walls.

Veins have thin and collapsible walls.

Arteries are located deep within the body.

Veins are superficial and peripherally located closer to the skin.

These carry blood from the heart to various body parts and tissues.

Veins carry blood from the various parts of the body and tissues to the heart.

Blood flows through arteries under high pressure.

Blood flows through veins under low pressure.

Valves are present here to prevent the backward blood flow.

Arterial blood has higher oxygen levels.

Venous blood has a high level of CO 2 .

Absence of valves in these vessels.

Valves are present in the veins that allow blood flowing in the upward direction.

Certain artery related diseases such as atherosclerosis, renal vascular disease, and pectoris exist.

Very few veins related diseases are known such as varicose veins.