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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

How is blood flow through capillary networks controlled?

Summary Introduction

To review:

The control of the blood that flows through the capillary networks.

Introduction:

The large artery carries blood from the heart and steadily branches into the smaller arteries. The arteries then further branch into the smaller venules, that is, arterioles. The arterioles then branch into the capillaries, the capillaries form a network that is used to exchange substances between the surrounding cells.

Explanation

The blood flowing through the capillary network is controlled by the arterioles. The arterioles have special smooth muscles, which help in controlling the blood flow through the capillary network. The capillaries have precapillary sphincter instead of smooth muscles, which is present at the junction between an arteriole and a capillary...

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