<P> At normal resting blood pressures , baroreceptors discharge with each heart beat . If blood pressure falls , such as on orthostatic hypotension or in hypovolaemic shock , baroreceptor firing rate decreases and baroreceptor reflexes act to help restore blood pressure by increasing heart rate . Signals from the carotid baroreceptors are sent via the glossopharyngeal nerve ( cranial nerve IX ) . Signals from the aortic baroreceptors travel through the vagus nerve ( cranial nerve X ) . Arterial baroreceptors inform reflexes about arterial blood pressure but other stretch receptors in the large veins and right atrium convey information about the low pressure parts of the circulatory system . </P>
which type of receptor is present in the cardiac wall and responds to stimulation by the vagus nerve
Arterial baroreceptors