NEET PG DENTAL EXAM

Detailed explanation-1: -The arterioles are the smallest arteries, with a caliber of between 0.3 mm and 10 microns (µm). The largest arterioles are endowed with three tunica, but the smallest arterioles, which lead into capillary beds, constitutes no more than a single layer of smooth muscle cells, arranged in a spiral around endothelium.

Detailed explanation-2: -Capillaries are the smallest blood vessels in the body.

Detailed explanation-3: -Eventually, the smallest arteries, vessels called arterioles, further branch into tiny capillaries, where nutrients and wastes are exchanged, and then combine with other vessels that exit capillaries to form venules, small blood vessels that carry blood to a vein, a larger blood vessel that returns blood to the heart.

Detailed explanation-4: -The largest artery is the aorta, the main high-pressure pipeline connected to the heart’s left ventricle. The aorta branches into a network of smaller arteries that extend throughout the body. The arteries’ smaller branches are called arterioles and capillaries.