38. Animal Form and Function
Thermoregulation
Multiple Choice
Multiple ChoiceOn a cold day, blood vessels in the skin __________.
A
dilate, allowing blood to keep the skin warm
B
constrict, forcing blood to flow through vessels in the skin
C
dilate, causing blood to pass through the cold skin more quickly
D
dilate, preventing blood flow to the surface
E
constrict, reducing heat loss from blood at the surface
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