You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Location of carotid sinus is: and explain in detail?
Carotid sinus:

It is a fusiform dilatation at the terminal end of common carotid artery or at the beginning of internal carotid artery. 
It has rich innervation from glossopharyngeal, vagus, and sympathetic nerves. 
The carotid sinus acts as a baroreceptor (pressure receptor) and regulates the blood pressure in the cerebral arteries.

Key Concept:
Carotid sinus is a fusiform dilatation at the terminal end of common carotid artery or at the beginning of internal carotid artery.