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Ivahew [28]
3 years ago
14

Precapillary sphincters increase the flow of blood through a tissue when they relax.

Medicine
2 answers:
Zarrin [17]3 years ago
8 0

Answer:

a. True

Explanation:

Arteries, capillaries, arterioles and precapillary sphincters are of utmost importance in the circulatory system.

The arteries before they become capillaries are somewhat smaller and are called arterioles, and the capillary when it becomes a vein again has an intermediate passage in what are smaller veins called venules; Precapillary sphincters branch the main channels, open or close other parts of the capital bed to meet the varying needs of the tissue. In this way, the sphincters and smooth muscle of veins and arteries regulate the supply of blood to the organs.

Thus, we can conclude that precapillary sphincters increase blood flow through a tissue when they relax.

artcher [175]3 years ago
3 0

Answer:

Precapillary sphincters increase the flow of blood through a tissue when they relax.

<em>a)True</em>

Explanation:

Precapillary sphincters are rings of smooth muscle bands that surround the capillary opening. These structures help regulate blood flow and blood pressure. They respond to the body's needs and receive nerve and hormonal signals to relax or contract in consequence.

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