PATHOLOGY

Detailed explanation-1: -Veins. Veins carry blood toward the heart. After blood passes through the capillaries, it enters the smallest veins, called venules. From the venules, it flows into progressively larger and larger veins until it reaches the heart.

Detailed explanation-2: -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. The venule is very thin-walled and easily prone to rupture with excessive volume.

Detailed explanation-3: -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.

Detailed explanation-4: -Nutrients and waste exchange between the blood and body tissues occurs at the capillary bed. Venules serve as exit vessels in the capillary bed of various organs and unite to form veins, which return the blood to the heart.