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carotid |
Also found in: Dictionary/thesaurus, Acronyms, Wikipedia, Hutchinson | 0.06 sec. |
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carotid /ca·rot·id/ (kah-rot´id) pertaining to the carotid artery, the principal artery of the neck.
carotid (k n either one of the two main right and left arteries of the neck. carotid stenosis, n the narrowing and hardening of the carotid artery. carotid triangle, n See triangle, carotid. carotid relating to the carotid artery, the principal artery of the neck. See Table 9. carotid body a small neurovascular structure lying in the bifurcation of the common carotid arteries, containing chemoreceptors that monitor oxygen content in blood and help to regulate respiration. Called also glomus caroticum. carotid body tumors usually unilateral nonfunctional adenoma, chemodectoma, nonchromaffin paraganglioma, or locally invasive carcinoma which may cause deviation of the trachea. carotid canal transmits the internal carotid artery to the cranial cavity through the pars petrosa of the temporal bone. carotid sheath contains the common carotid artery, internal jugular vein and vagosympathetic trunk. carotid sinus a dilatation of the proximal portion of the internal carotid or distal portion of the common carotid artery, containing in its wall pressoreceptors which are stimulated by changes in blood pressure. carotid sinus reflex slowing of the heart rate when pressure is applied over the carotid sinus. carotid sinus syndrome syncope sometimes associated with convulsive seizures due to overactivity of the carotid sinus reflex. |
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Webb et al demonstrated that perfusion of both sides of the tongue in rabbits who had undergone unilateral ligation of the common carotid artery was indistinguishable from that of controls 1 week postoperatively. A favorite cause for an anterior circulation TIA is an embolus (blood clot) from the bifurcation (or splitting) of the common carotid artery in the neck into the internal and external carotid--the former carrying oxygenated blood to the brain and eye and the latter to the muscles and skin of the face and scalp. The PAES consists of a guiding catheter with an elastomeric balloon that is inflated in the common carotid artery (CCA) below (proximal to) the stenotic lesion being treated, and a hollow wire with an elastomeric balloon at its tip to occlude the external carotid artery (ECA). |
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