Carotid body

 

 Carotid body contains chemoreceptors which excite nerves that pass through the carotid body nerve to reach the brain stem in the medulla where they enter the vasomotor center. At the vasomotor center the peripheral blood pressure is controlled. This chemoreceptor mechanism is not active until systolic blood pressure falls to 80 mmHg.

The chemoreceptors are also present in aortic bodies adjacent to the aorta. Their nerve fibers run in the vagus nerve to reach the vasomotor center of the medulla.


 

 

 

 

 

 

 

 

 

 

Physiological auscultation

 

 

 

 

 

 

 

 

 

 

 


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Blood vessels physiology    


Baroreceptors are placed in many arteries of the body including the aortic arch and the carotid body and sinus


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