As oxygen levels in a tissue decrease, the precapillary sphincters contract.True false question.TrueFalse

This statement is True.

Explanation:

Precapillary sphincters are small muscles that regulate blood flow into the capillaries. They respond to various physiological conditions, including the levels of oxygen (O2) in the tissue. When oxygen levels decrease, this can signal that the tissue is experiencing hypoxia (low oxygen availability), often due to factors like increased metabolic demand or inadequate blood supply.

In response to low oxygen levels, precapillary sphincters tend to contract, reducing blood flow into the capillaries. This mechanism can serve to redirect blood flow toward more oxygenated areas or activate compensatory mechanisms in the body to enhance oxygen delivery. By limiting blood flow to areas that are already low in oxygen, the body prioritizes regions that may require more oxygen delivery, ensuring efficient utilization of the available oxygen.

In summary, the contractile behavior of precapillary sphincters in relation to declining oxygen levels is a reflection of the body’s intricate regulatory processes aimed at maintaining homeostasis.