How are arterioles and venules join?
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Answer:
Arteries transport blood away from the heart and branch into smaller vessels, forming arterioles. Arterioles distribute blood to capillary beds, the sites of exchange with the body tissues. Capillaries lead back to small vessels known as venules that flow into the larger veins and eventually back to the heart.
Arteries are the blood vessels which carry oxygenated blood away from the heart to the different parts of the body. When these arteries get away from the heart, they divide themselves into smaller and smaller vessels to form arterioles. These arterioles further branch out to form capillaries which nourish each and every cell of the body. Arterioles have a muscular wall and helps in regulation of blood pressure.
Veins are the blood vessels which carry deoxygenated blood from different parts of the body to the heart. Similar to the arteries, veins divides themselves into smaller and smaller blood vessels resulting in the formation of venules. Many venules together link the capillaries to the vein resulting in the transport of the blood back to the heart from different parts of the body.