When there is an immediate requirement for increased oxygen to a particular body tissue in the systemic circuit,
A)arterioles will dilate in that area.
B)capillaries will increase in number.
C)capillaries will decrease in size.
D)arterioles will constrict in that area.

Question

Quizplus · Accepted Answer

When there is an immediate requirement for increased oxygen to a particular body tissue in the systemic circuit, arterioles will dilate in that area to increase blood flow and deliver more oxygen and nutrients to the tissues. Constriction of arterioles would decrease blood flow and oxygen delivery, so option D is incorrect. The number of capillaries is not likely to change significantly in response to a sudden increase in oxygen demand, so options B and C are not correct.

When There Is an Immediate Requirement for Increased Oxygen to a Particular