Question

What role does vasoconstriction play in thermoregulation​

Answer 1

Reduces blood flow and helps retain heat thus the blood returning to the heart has not lost much heat

Answer 2

Step-by-step explanation:

In endotherms, warm blood from the body's core typically loses heat to the environment as it passes near the skin. Shrinking the diameter of blood vessels that supply the skin, a process known as vasoconstriction, reduces blood flow and helps retain heat.Thus, the blood returning to the heart has not lost much heat.