ANATOMY

Detailed explanation-1: -Venules are the smallest veins and receive blood from capillaries. They also play a role in the exchange of oxygen and nutrients for water products. There are post-capillary sphincters located between the capillaries and venules.

Detailed explanation-2: -Capillaries. Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins).

Detailed explanation-3: -Blood leaves the capillary and enters the small venules. These venules become progressively larger vessels called veins.

Detailed explanation-4: -What are venules? Your venules are very small blood vessels that connect your capillaries with your veins throughout your body. Your venules have the important function of moving blood that contains waste and lacks oxygen from your capillaries to your veins. From there, your blood can make its way back to your heart.