Question

How does the human body conserve heat? Select all that apply.

1 By decreasing muscle activity in the body
2 Through peripheral vasodilation in the body
3 Through peripheral vasoconstriction in body
4 By shunting blood to superficial body tissues
5 By shunting blood away from the skin surface

Answer 1

3 Through peripheral vasoconstriction in body; 5 By shunting blood away from the skin surface

Step-by-step explanation:

Controlling blood flow to the skin helps maintain body temperature.

• Constriction of blood vessels reduces blood flow and heat loss, while increased blood flow to the skin via vasodilation increases heat loss and lowers body temperature.
• Muscle contraction uses energy and releases heat, so increasing the muscle activity (moving or shivering) will also help conserve heat.