How does chronic hypertension affect the range of arterial pressure over which the cerebral circulation can maintain relatively constant blood flow?
Ans. D. THE entire range of regulation shifts to higher pressuresThe autoregulatory range is shifted to higher pressures because the arteries and arterioles increase their resistance. The functional and structural changes increase the arterial pressure at which autoregulation of blood flow occurs, but increase the lowest pressure at which blood flow can be maintained.
Very little change occurs
The vasculature primarily adapts to higher arterial pressure
The vasculature primarily loses regulation at low arterial pressure
The entire range of regulation shifts to higher pressures
Heart, Circulation, and Blood