Carotid Sinus

(redirected from carotid bulb)
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Related to carotid bulb: carotid artery, Carotid stenosis

carotid sinus

[kə′räd·əd ′sī·nəs]
An enlargement at the bifurcation of each carotid artery that is supplied with sensory nerve endings and plays a role in reflex control of blood pressure.

Carotid Sinus


(bulbus caroticus, sinus caroticus, the dilated area of the common carotid artery before bifurcation into its external and internal branches.

The carotid sinus is an important reflexogenic zone that plays a part in maintaining the constancy of arterial pressure, heart action, and blood gases content; it is the site of baroreceptors, which react to changes in blood pressure, and chemoreceptors, which react to changes in the chemical composition of the blood and in oxygen tension. The carotid sinus is innervated by the sensory branch of the glossopharyngeal nerve (sinus nerve, Hering’s nerve). Excitation of the nerve endings in the carotid sinus is the first link in the chain of the carotid reflexes.


References in periodicals archive ?
The intima-media thickness of right common carotid artery (CCA RT), left common carotid artery (CCA LT), right carotid bulb region (BULB RT), left carotid bulb region (BULB LT) and the Composite value increased from Healthy to Prediabetes to Diabetes.
Bradycardia, related to manipulation of the carotid sinus baroreceptors located in the carotid bulb, may occur during the procedure just after the stent implantation and/or balloon angioplasty (Martinez-Fernandez et al.
Other exams which are important in the general evaluation-phase of a carotid bulb paragangliomas are endocrine study and 123I-MIBG scan.
Measurements were made at 12 carotid artery sites in each patient, including the near and far walls of the right and left common carotid artery, carotid bulb, and internal carotid artery.
These arteries have different origins, but after the origin they take the same course up the neck to the carotid bulb.
Measurement of the IMT was taken from the area one cm proximal to carotid bulb.
The use of contrast provides a clearer picture of intracranial circulation and downstream structures (for example, smaller vessels) and decreases artifact at the carotid bulb.
The cardinal physical finding is tenderness on palpation of the carotid bulb, sometimes accompanied by prominence or throbbing of the carotid pulse.
The transverse distal CCA about 2 cm inferior to the carotid bulb and free of plaque was used for our analysis.
Carotid bulb region values were negated from the study as this region is more prone for plaque formation.