If the arterial blood pressure in the brain is suddenly decreased, the flow through arterioles in the brain will immediately fall and then which of these will occur next?

Question

Quizplus · Accepted Answer

The decrease in arterial blood pressure will initially cause a decrease in flow through brain arterioles. However, flow autoregulation mechanisms in the brain will eventually cause compensation, leading to a return of blood flow toward its original level. Brain arterioles will not constrict, dilate, or experience reactive hyperemia. There is also no evidence to suggest that excess CO₂ levels would be involved in this scenario.

If the Arterial Blood Pressure in the Brain Is Suddenly