The structure of a capillary, characterized by its thin walls (one cell thick) and narrow diameter, facilitates the efficient exchange of gases, nutrients, and waste products between blood and surrounding tissues. This design allows for a large surface area relative to volume, enhancing diffusion rates. Additionally, the slow blood flow through capillaries provides ample time for these exchanges to occur effectively.
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