Carotid baroreceptors:
Ans. A. Are important in the rapid, short term regulation of arterial blood pressureThe function of these baroreceptors is the rapid short-term regulation of arterial blood pressure. The receptors start firing at a pressure of approximately 40 mm Hg. They completely adapt over 1 to 2 days, not weeks. In general, changes in baroreceptor activity have little effect on cerebral blood flow. The sympathetic activity following a fall in blood pressure results in increased heart rate and contractility, which raises myocardial metabolism and coronary blood flow,
Are important in the rapid, short term regulation of arterial blood pressure
Do not fire until a pressure of approximately 100 mm Hg is reached
Adapt over 1 to 2 weeks to the prevailing mean arterial pressure
Stretch reflexively decreases cerebral blood flow
Heart, Circulation, and Blood