What are venules?

Venules are known as the smallest veins in the circulatory system. They are formed by the convergence of capillaries and are responsible for collecting blood from the capillary beds and transporting it back to larger veins, ultimately leading to the heart. Venules play a crucial role in the venous return system, aiding in the flow of deoxygenated blood away from tissues. Their structure is designed to facilitate the exchange of nutrients and waste between blood and surrounding tissues efficiently.

Understanding the anatomical context of venules is important, as they help regulate blood flow and pressure following the nutrient exchange that occurs in the capillaries.