What Is the Main Function of Capillaries?
Last Updated Apr 11, 2020 9:16:19 AM ET

The main function of capillaries is enabling the exchange between water, oxygen, carbon dioxide, nutrients and many other substances between blood and the surrounding tissues. The capillaries also connect the arterioles and venules to create uninterrupted blood flow through the body.
Capillaries function in a group, or a capillary bed, which is an interweaving network of capillaries. The more active a cell is the more capillaries that are needed to supply the proper blood flow and exchange of materials. These blood vessels are microscopic, but their presence is viewable at times. When a person blushes, this occurs in the capillaries and turns the cheeks red. This is partially possible because the wall of the artery is only one cell thick.
More From Reference

10 Must-Watch TED Talks That Have the Power to Change Your Life

Strange Americana: Does Video Footage of Bigfoot Really Exist?

How the COVID-19 Pandemic Will Change In-Person Retail Shopping in Lasting Ways

Tips and Tricks for Making Driveway Snow Removal Easier

Here’s How Online Games Like Prodigy Are Revolutionizing Education

What Are the Steps of Presidential Impeachment?