Brain blood flow autoregulation ________.
A. is less sensitive to pH than to a decreased oxygen level
B. causes constriction of cerebral blood vessels in response to a drop in systemic blood pressure
C. is abolished when abnormally high CO2levels persist
D. is controlled cardiac centers in the pons
Answer:C
Brain blood flow autoregulation ________.
A. is less sensitive to pH than to a decreased oxygen level B. causes constriction of cerebral blood vessels in response to a drop in systemic blood pressure C. is abolished when abnormally high CO2levels persist D. is controlled cardiac centers in the pons