carotid sinus reflex

carotid sinus reflex
pressure on, or in, the carotid artery at the level of its bifurcation, causing reflex slowing of the heart rate; this reflex originates in the wall of the sinus of the internal carotid artery. See carotid sinus syndrome, under syndrome.

Medical dictionary. 2011.

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  • carotid sinus syndrome — syncope sometimes associated with convulsive seizures due to overactivity of the carotid sinus reflex (q.v.) when pressure is applied to one or both carotid sinuses. Called also carotid sinus syncope and Charcot Weiss Baker s …   Medical dictionary

  • carotid sinus — n a small but richly innervated arterial enlargement that is located near the point in the neck where the common carotid artery divides into the internal and the external carotid arteries and that functions in the regulation of heart rate and… …   Medical dictionary

  • carotid sinus — a pocket in the wall of the carotid artery, at its division in the neck, containing receptors that monitor blood pressure (see baroreceptor). When blood pressure is raised, impulses travel from the receptors to the vasomotor centre in the brain,… …   The new mediacal dictionary

  • carotid body — n a small body of vascular tissue that adjoins the carotid sinus, functions as a chemoreceptor sensitive to change in the oxygen content of blood, and mediates reflex changes in respiratory activity called also carotid gland, glomus caroticum * * …   Medical dictionary

  • Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… …   Medical dictionary

  • sinus — 1. [TA] A channel for the passage of blood or lymph, without the coats of an ordinary vessel; e.g., blood passages in the gravid uterus or those in the cerebral meninges. 2. [TA] A cavity or …   Medical dictionary

  • carotid body — noun Date: 1925 a small body of vascular tissue that adjoins the carotid sinus, functions as a chemoreceptor sensitive to change in the oxygen content of blood, and mediates reflex changes in respiratory activity …   New Collegiate Dictionary

  • baroreceptor reflex — the reflex responses to stimulation of baroreceptors of the carotid sinus and aortic arch, regulating blood pressure by controlling heart rate, strength of heart contractions, and diameter of blood vessels …   Medical dictionary

  • Cavernous sinus thrombosis — Infobox Disease Name = PAGENAME Caption = Oblique section through the cavernous sinus. DiseasesDB = 2184 ICD10 = ICD9 = ICD9|325 ICDO = OMIM = MedlinePlus = eMedicineSubj = emerg eMedicineTopic = 87 eMedicine mult = eMedicine2|neuro|572 MeshID =… …   Wikipedia

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