NEET PG DENTAL EXAM

Detailed explanation-1: -A venule is a very small vein in the microcirculation that allows blood to return from the capillary beds to drain into the venous system via increasingly larger veins. Post-capillary venules are the smallest of the veins with a diameter of between 10 and 30 micrometres (m).

Detailed explanation-2: -A venule is a small blood vessel in the microcirculation that allows deoxygenated blood to return from capillary beds to larger blood vessels called veins. Venules range from 8 to 100m in diameter and are formed when capillaries come together. Many venules unite to form a vein.

Detailed explanation-3: -There are two types of venules: small and large. The small venules have an endothelial lining on a basement membrane and the larger venules have, in addition to the endothelial wall, a muscular wall. Fluid and macromolecular exchange take place mostly at the beginning of the venules.