Variations in blood flow to the brain are governed primarily by which of the following?

Question

Quizplus · Accepted Answer

Local metabolic control mechanisms, such as changes in oxygen and carbon dioxide levels and pH in the microcirculation of the brain, are the primary regulators of blood flow to the brain. This helps ensure that areas of the brain with higher activity receive more oxygen and nutrients. Central neural innervation and humoral agents can also affect blood flow, but they are not the primary regulators. Myogenic control mechanisms regulate blood flow in other parts of the body, not in the brain.

Variations in Blood Flow to the Brain Are Governed Primarily