Blood flow to the skin ________.
A. is controlled mainly by decreasing pH
B. increases when environmental temperature rises
C. increases when body temperature drops so that the skin does not freeze
D. is not an important source of nutrients and oxygen for skin cells
Answer:B
Blood flow to the skin ________.
A. is controlled mainly by decreasing pH B. increases when environmental temperature rises C. increases when body temperature drops so that the skin does not freeze D. is not an important source of nutrients and oxygen for skin cells