High pressure receptors

High Pressure Receptors

Illustration of high pressure receptors, also known as baroreceptors

The High Pressure Receptors, also known as baroreceptors, are specialized neurons that detect changes in the blood pressure and help maintain the stability of the circulatory system. They are primarily located in the carotid sinus and the aortic arch.

Function

High pressure receptors play a crucial role in the homeostasis of the body. They respond to changes in the blood pressure by sending signals to the brain, specifically the medulla oblongata, which then initiates appropriate responses to normalize the pressure. These responses include altering the heart rate, dilating or constricting the blood vessels, and adjusting the volume of blood pumped by the heart.

Structure

High pressure receptors are stretch-sensitive mechanoreceptors. They consist of non-myelinated nerve endings located within the elastic walls of the arteries. When the arterial walls are stretched due to an increase in blood pressure, these receptors are stimulated and generate action potentials.

Clinical Significance

Abnormal functioning of high pressure receptors can lead to conditions such as Orthostatic hypotension, hypertension, and heart failure. Understanding the role and function of these receptors can help in the development of treatments for these conditions.

See Also

• Low pressure receptors
• Blood pressure
• Homeostasis