PATHOLOGY

Detailed explanation-1: -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). The primary function of capillaries is the exchange of materials between the blood and tissue cells.

Detailed explanation-2: -The capillaries are the smallest blood vessels that have a diameter of around 5-10 micrometers. They are known as the smallest blood vessels of the body. Additional Information:-Blood vessels are part of the circulatory system that helps in the transportation of blood throughout the body.

Detailed explanation-3: -Why Are Capillaries Very Small in Size? Capillaries need to be small in order to facilitate oxygen and carbon dioxide gas exchange in cells. 3 They also play a role in fluid and nutrient exchange, forming the connection between the body’s smallest arteries (arterioles) and smallest veins (venules).

Detailed explanation-4: -Venules. 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.