Brain blood flow autoregulation .

Question

Quizplus · Accepted Answer

Brain blood flow autoregulation is the ability of the brain to maintain a constant blood flow despite changes in systemic blood pressure, and is primarily regulated by changes in the diameter of cerebral blood vessels. This autoregulation is achieved through a complex feedback mechanism involving various factors such as CO2 levels, pH, and oxygen levels. However, when abnormally high CO2 levels persist, this can override the brain's ability to regulate blood flow and result in vasodilation, leading to an increase in blood flow to the brain.

Brain Blood Flow Autoregulation