Concerning the carotid sinus, the right description is

A.It is a dilatation at the posterior wall of the common carotid artery.

B.It is a dilatation at the point of the bifurcation of the common carotid artery.

C.It is a small ball struture behind the point of division of the common carotid artery.

D.It is a chemoreceptor.

E.All above are wrong.

正确答案：It is a dilatation at the point of the bifurcation of the common carotid artery.