Which of the following statements regarding regulation of local blood flow is true? A) Increased metabolic rate in a tissue increases capillary blood flow into the tissue. B) Blood flow through capillaries is continuous. C) Contraction of precapillary sphincters will increase blood flow to a capillary bed. D) Increased levels of CO₂ increase the contraction of precapillary sphincters. E) Tissue need for O₂ and amino acids will cause precapillary sphincters to contract.

Question

Quizplus · Accepted Answer

Increased metabolic activity in a tissue leads to increased demand for oxygen and nutrients, which is met by increasing the blood flow to that tissue. This is achieved through mechanisms such as vasodilation of arterioles and relaxation of precapillary sphincters, allowing more blood to flow into the capillaries supplying the tissue.

Which of the Following Statements Regarding Regulation of Local Blood