Action potentials triggered in the baroreceptor ending are then directly conducted to the brainstem where central terminations ( synapses ) transmit this information to neurons within the solitary nucleus.
42.
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.
43.
Baroreceptors respond very quickly to maintain a stable blood pressure, but their responses diminish with time and thus are most effective for conveying short term changes in blood pressure.
44.
Baroreceptors fire at a rate determined by how much they are stretched, which is influenced by blood pressure, level of physical activity, and the relative distribution of blood.
45.
However, because dihydropyridine CCBs result in a decrease in blood pressure, the baroreceptor reflex often initiates a reflexive increase in sympathetic activity leading to increased heart rate and contractility.
46.
Angiotensin II increases thirst sensation ( dipsogen ) through the subfornical organ of the brain, decreases the response of the baroreceptor reflex, and increases the desire for sympathetic fibers.
47.
The valsalva maneuver should be the first vagal maneuver tried and works by increasing intra-thoracic pressure and affecting baroreceptors ( pressure sensors ) within the arch of the aorta.
48.
Among these receptors are various proprioreceptors, baroreceptors, and chemoreceptors, plus stimuli from the limbic system which normally enable the precise regulation of heart function, via cardiac reflexes.
49.
Some argue that when pressure is applied to the carotid artery, the baroreceptors send a signal to the brain via the glossopharyngeal nerve and the heart via the vagus nerve.
50.
Baroreceptors are stretch receptors located in the aortic sinus, carotid bodies, the venae cavae, and other locations, including pulmonary vessels and the right side of the heart itself.
