metarterioles when resistance is low
Tissue without capillaries is called avascular tissue. Examples of avascular tissue include:CartilageEpitheliaCorneaLensAll organs contain blood vessels.
histamine
capillary
this is possible because there are alternate branches that bypass capillary beds.
Nicotine is the blood vessels' constrictor. Not all blood vessels, of course, but mainly the peripheral blood vessels, including the brain capillary blood vessels.
Capillary
Metabolites exchange by diffusion with tissue cells at the capillaries in the circulatory system. Capillaries are the smallest blood vessels where the exchange of nutrients, oxygen, and waste products occurs between the blood and the surrounding tissue cells.
capillary blood sugar vs venous blood sdugar
artery- vein- capillary
venule(veins)
Artery, Vein and Capillary
Capillary