In a process called autoregulation, ________ in response to a decline in dissolved oxygen levels within a tissue.

Question

Quizplus · Accepted Answer

Autoregulation involves the ability of tissues to regulate their own blood flow in response to changes in metabolic demand or oxygen availability. When oxygen levels in a tissue decline, the precapillary sphincters relax, allowing blood to flow into the capillary bed and increase oxygen delivery to the tissue. Therefore, choice B is the correct answer. Choices A, C, D, and E are all incorrect because they describe processes that would decrease blood flow to the tissue, which would be counterproductive in response to decreased oxygen levels.

In a Process Called Autoregulation, ________ in Response to a Decline