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Jul 9, 2021 · Blood vessels carry oxygen-rich blood throughout your body, then deliver it back to your heart. Veins, arteries and capillaries are blood vessels.
Jun 14, 2024 · Learn about the structure and function of blood vessels, which carry blood in the human or animal body. Find out how blood vessels are affected by diseases and conditions such as inflammation, atherosclerosis, and hypertension.
- The Editors of Encyclopaedia Britannica
There are five types of blood vessels: the arteries, which carry the blood away from the heart; the arterioles; the capillaries, where the exchange of water and chemicals between the blood and the tissues occurs; the venules; and the veins, which carry blood from the capillaries back towards the heart.
- The Three Major Types of Blood Vessels: Arteries, Veins, and Capillaries. Blood vessels flow blood throughout the body. Arteries transport blood away from the heart.
- Oxygenated Blood Flows Away from the Heart Through Arteries. The left ventricle of the heart pumps oxygenated blood into the aorta. From there, blood passes through major arteries, which branch into muscular arteries and then microscopic arterioles.
- Veins Carry Blood Back Toward the Heart. After the capillaries release oxygen and other substances from blood into body tissues, they feed the blood back toward the veins.
- Exchange of Gases, Nutrients, and Waste Between Blood and Tissue Occurs in the Capillaries. Capillaries are tiny vessels that branch out from arterioles to form networks around body cells.
Aug 8, 2023 · Aside from capillaries, blood vessels are all made of three layers: The adventitia or outer layer which provides structural support and shape to the vessel. The tunica media or a middle layer composed of elastic and muscular tissue which regulates the internal diameter of the vessel.
- William D. Tucker, Yingyot Arora, Kunal Mahajan
- 2023/08/08
- 2017
Blood is carried through the body via blood vessels. An artery is a blood vessel that carries blood away from the heart, where it branches into ever-smaller vessels.
Describe the basic structure of a capillary bed, from the supplying metarteriole to the venule into which it drains. Compare and contrast veins, venules, and venous sinuses on the basis of structure, location, and function. Discuss several factors affecting blood flow in the venous system.
