Microcirculation

Definition

Microcirculation is the circulation of blood in the smallest blood vessels within body tissues, including capillaries, arterioles, and venules. It facilitates the exchange of nutrients and waste products between blood and tissues.

Related terms

Capillaries:

Tiny blood vessels that connect arterioles and venules, allowing for the exchange of oxygen, carbon dioxide, nutrients, and waste materials with surrounding tissues.

Arterioles:

Small arteries that lead into capillary beds, regulating blood flow to those beds through constriction and dilation.

Venules: Small veins that receive blood from capillary beds and begin the process of returning it to the heart