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carotid sinus

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
carotid sinus
n.
A dilated area located at the bifurcations of the carotid arteries and containing numerous baroreceptors that function in the control of blood pressure by mediating changes in the heart rate.
carotid sinus
A dilated region that is located at the point of bifurcation of the carotid artery and contains pressure receptors (called baroreceptors), which upon stimulation cause slowing of the heart rate, vasodilation, and a decrease in blood pressure.


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As a chemoreceptor, it is distinct from the carotid sinus, which is a baroreceptor.
Nonpulsatile carotid body tumor in a teenager by Osborne, Ryan F. / Ear, Nose and Throat Journal
More importantly, in susceptible individuals, palpation over the region of the carotid sinus may cause carotid sinus syncope or worse.
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The study recommended pacemaker therapy for persons with carotid sinus syndrome who suffer repeated fainting spells.
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