Cerebral autoregulation maintains a constant cerebral blood flow (CBF) despite changes in systemic blood pressure. This is achieved through the dilation and constriction of cerebral arterioles. When blood pressure rises, arterioles constrict to prevent excessive blood flow. Conversely, when blood pressure drops, arterioles dilate to maintain adequate blood flow. This mechanism is vital for preventing brain injuries and long-term neurological deficits.
