they are one cell thick.
Artery -> Arteriole -> Capillary -> Venule -> Vein
Two ways in which the structure of a capillary is adapted to its function is to encourage the exchange of oxygen. Another reason is to encourage the exchange of carbon dioxide.
Capillary
Increasing surface area via capillary action
A capillary viscometer is constructed from glass. Glass blowers make different styles of capillary viscometers with specific bulb and capillary diameters. These dimension determine the viscosity range of liquids which can be tested.
The respiratory membrane is formed by a combination of the walls of alveoli and walls of capillaries. It consists of type 1 alveolar cells, a basement membrane, capillary endothelium, alveolar epithelium and macrophages.
they allow two-way flow
it has a single tunic- only the tunica interna
It is not easy to be cleaned inside.
capillary action
1ton