Concept:The skin is an organ of homeostasis and thermoregulation in the human body.
Explanation:Homeostasis means keeping the internal body conditions stable.
The skin helps to regulate body temperature through several mechanisms.
When the body is too hot, blood vessels in the skin widen or vasodilate.
This allows more heat to be lost from the blood to the surroundings.
Sweat glands also produce sweat, which evaporates and cools the body.
When the body is too cold, blood vessels narrow or vasoconstrict.
This reduces heat loss and helps preserve the body’s core temperature.
These actions show that the skin does not filter blood, produce hormones, or digest food.
Therefore, the main homeostatic function of the skin among the options is temperature regulation.
Answer:A. Regulation of body temperature