In ‘heat conservation mode’ what have the precapillary sphincter muscles done?
Physics · High School · Wed Jan 13 2021
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In "heat conservation mode," the precapillary sphincter muscles have constricted or tightened.
The precapillary sphincters are small muscles located at the entrance of capillaries, which are the smallest blood vessels. When these muscles constrict, they reduce the blood flow into the capillaries, helping to conserve heat by minimizing the amount of warm blood reaching the body's extremities. This physiological response is part of the body's efforts to regulate temperature in response to cold conditions.