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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.
Low pressure baroreceptors or low pressure receptors are baroreceptors that relay information derived from blood pressure within the autonomic nervous system. They are stimulated by stretching of the vessel wall. They are located in large systemic veins and in the walls of the atria of the heart, and pulmonary
The carotid sinus contains numerous baroreceptors which function as a "sampling area" for many homeostatic mechanisms for maintaining blood pressure.The carotid sinus baroreceptors are innervated by the carotid sinus nerve, which is a branch of the glossopharyngeal nerve (CN IX).
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).
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 .
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.
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change of blood pressure, detected by arterial baroreceptors in the aortic arch and the carotid sinuses. [2] various other inputs from the hypothalamus, thalamus, and cerebral cortex. [4] The cardiovascular centre affects changes to the heart rate by sending a nerve impulse to the cardiac pacemaker via two sets of nerves: