True. When blood plasma volume is decreased, the body's ability to sweat and dissipate heat is hindered.
This is because sweat is primarily composed of water and electrolytes, which are dissolved in blood plasma. When blood plasma volume is decreased, the body has less plasma to draw the water and electrolytes from to produce sweat. As a result, the body is not able to sweat as efficiently, which can lead to an elevation in body temperature and an increased risk of heat-related illnesses.The average plasma volume in a human is about 3.3 liters (3,300 mL). It makes up approximately 8% of the total blood volume in the body.
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