Question

question 3 (5 points) listen which of the following would be a body response when stepping outside without a coat on a snowy day? a) sebaceous glands secrete more sebum. b) blood vessels in the skin narrow and contract. c) more liquid is transported by the body to the skin for insulation. d) blood vessels in the skin expand. question 4 (5 points) listen if someone is blood type o, then their blood contains antibodies for which antigens? a) a b) both a and b c) b d) neither a nor b

Explanation:

For Question 3: When it's cold outside, the body tries to conserve heat. Vasoconstriction, which is the narrowing and contraction of blood - vessels in the skin, reduces blood flow to the skin surface, minimizing heat loss. Sebaceous gland secretion is not directly related to cold - temperature response. The body does not transport more liquid to the skin for insulation, and blood vessels do not expand (which would increase heat loss).
For Question 4: Blood type O has no A or B antigens on the red blood cells but contains both anti - A and anti - B antibodies.

Answer:

Question 3: B. Blood vessels in the skin narrow and contract.
Question 4: B. Both A and B