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Arterial baroreceptors are located in the carotid sinus (at the bifurcation of common carotid artery into external and internal carotids) and in the aortic arch. [5] The baroreceptors can identify the changes in both the average blood pressure or the rate of change in pressure with each arterial pulse.
Baroreceptors are present in the atria of the heart and vena cavae, but the most sensitive baroreceptors are in the carotid sinuses and aortic arch.While the carotid sinus baroreceptor axons travel within the glossopharyngeal nerve (CN IX), the aortic arch baroreceptor axons travel within the vagus nerve (CN X).
Low pressure baroreceptors are primarily involved in the regulation of the blood volume. Low pressure baroreceptors have both circulatory and renal effects, which produce changes in hormone secretion. Stimulation of these receptors causes the atria to release atrial natriuretic peptide. This hormone acts on the kidneys to increase sodium ...
The carotid sinus baroreceptor can be oversensitive to manual stimulation from the pressure applied at the carotid sinus at the carotid bifurcation. It is a condition known as 'carotid sinus hypersensitivity' (CSH), 'carotid sinus syndrome' or 'carotid sinus syncope', in which manual stimulation causes large changes in heart rate and blood ...
Baroreflex activation therapy is an approach to treating high blood pressure and the symptoms of heart failure.It uses an implanted device to electrically stimulate baroreceptors in the carotid sinus region.
Baroreceptors are a type of mechanoreceptor sensory neuron that is excited by stretch of the blood vessel. There are also juxtacapillary (J) receptors, which respond to events such as pulmonary edema, pulmonary emboli, pneumonia, and barotrauma.
High pressure receptors or high pressure baroreceptors are the baroreceptors found within the aortic arch and carotid sinus. They are only sensitive to blood pressures above 60 mmHg . When these receptors are activated they elicit a depressor response; which decreases the heart rate and causes a general vasodilation .
Similarly, 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. Rates of firing from the baroreceptors represent blood pressure, level of physical activity, and the relative distribution of blood.