Question

When the environmental temperature is low, our blood vessels constrict, minimising blood flow near the skin.

• A. True
• B. False

Answer 1

The correct option is A

True

When the environmental temperature is low, our blood vessels constrict (vasoconstriction), reducing blood flow near the skin. On the contrary, when the weather is hot, our blood vessels dilate (vasodilation) to bring in more blood near the skin surface.