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