Vascular system

Vascular system refers to the body's network of blood vessels that circulate blood throughout the body. This system is composed of three types of blood vessels: arteries, veins, and capillaries.

Structure

The vascular system is made up of three main types of blood vessels:

• Arteries: These are large, muscular vessels that carry blood away from the heart. They have thick walls to withstand the high pressure of blood being pumped by the heart.

• Veins: These are vessels that return blood to the heart. They have thinner walls than arteries and contain valves to prevent the backflow of blood.

• Capillaries: These are the smallest blood vessels, where the exchange of oxygen, nutrients, and waste products occurs between the blood and the body's cells.

Function

The primary function of the vascular system is to transport blood, which carries oxygen and nutrients, to all parts of the body. It also helps remove waste products like carbon dioxide from the body's cells. The vascular system plays a crucial role in maintaining homeostasis and regulating body temperature.

Diseases and disorders

There are several diseases and disorders that can affect the vascular system, including:

• Atherosclerosis: This is a condition where plaque builds up in the arteries, narrowing them and reducing blood flow.

• Deep vein thrombosis (DVT): This is a blood clot that forms in a deep vein, usually in the leg.

• Varicose veins: These are swollen, twisted veins that you can see just under the surface of the skin.

• Peripheral artery disease (PAD): This is a circulatory condition in which narrowed blood vessels reduce blood flow to the limbs.

See also

• Circulatory system
• Heart
• Blood

Vascular system Resources
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