A capillary is a small blood vessel, from 5 to 10 micrometres in diameter, and is part of the microcirculation system. Capillaries are microvessels and the smallest blood vessels in the body.

Capillaries are tiny vessels that transport blood, nutrients and oxygen to cells in your organs and body systems. What are capillaries? Capillaries are delicate blood vessels (tubes that hold blood) …

Capillary, in human physiology, any of the minute blood vessels that form networks throughout the bodily tissues; it is through the capillaries that oxygen, nutrients, and wastes are exchanged between the …

Oct 19, 2025 · Learn what capillaries are, and their structure and function in the lungs and tissues. Also learn about capillary microcirculation and fluid exchange.

Capillaries form dense networks between the arteries and the veins, and it is only in the capillary beds that interchange of oxygen, carbon dioxide and nutrients can take place with the cells.

capillary: Any of the small blood vessels that connect arteries to veins. microcirculation: The flow of blood through the smallest vessels such as arterioles, capillaries, and venules.

Jul 20, 2025 · There are three primary types of capillaries, categorized by their structure and degree of permeability. The most common are continuous capillaries, which have an uninterrupted endothelial …

Mar 19, 2024 · Capillaries are the tiniest blood vessels in the human body and are vital for sustaining life. Despite their microscopic size, they form an intricate network that facilitates the essential …

Mar 12, 2019 · Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange...

Capillaries are the smallest blood vessels in the body, distinguished from other blood vessels by their lack of muscular and elastic tissue.