Continuous capillary

Tissues with high metabolic requirements like heart muscle shown on the left, have a large number of capillaries. In contrast, tissues with low activity, like the connective tissue seen on the right, have fewer capillaries.

Capillaries are the smallest blood vessels and are composed of a single layer of endothelial cells and their basal laminae. Connective tissue cells with contractile proteins, called pericytes, may surround a capillary. Tissues with high metabolic requirements like heart muscle have a large number of capillaries. Capillaries are so narrow that blood cells must pass through in single file.1000x, 1000x

Capillaries are the smallest blood vessels and are composed of a single layer of endothelial cells and their basal laminae. Connective tissue cells with contractile proteins, called pericytes, may surround a capillary. Tissues with high metabolic requirements like heart muscle have a large number of capillaries. Capillaries are so narrow that blood cells must pass through in single file.1000x, 1000x

Capillaries are the smallest blood vessels and are composed of a single layer of endothelial cells and their basal laminae. Connective tissue cells with contractile proteins, called pericytes, may surround a capillary. Tissues with high metabolic requirements like heart muscle have a large number of capillaries. Capillaries are so narrow that blood cells must pass through in single file.1000x, 1000x

Capillaries are the smallest blood vessels and are composed of a single layer of endothelial cells and their basal laminae. Connective tissue cells with contractile proteins, called pericytes, may surround a capillary. Tissues with high metabolic requirements like heart muscle have a large number of capillaries. Capillaries are so narrow that blood cells must pass through in single file.1000x, 1000x