vasomotor centre

a collection of nerve cells in the medulla oblongata that receives information from sensory receptors in the circulatory system (see baroreceptor) and brings about reflex changes in the rate of the heartbeat and in the diameter of blood vessels, so that the blood pressure can be adjusted. The vasomotor centre also receives impulses from elsewhere in the brain, so that emotion (such as fear) may also influence the heart rate and blood pressure. The centre works through vasomotor nerve of the sympathetic and parasympathetic systems.

Medical dictionary. 2011.

Look at other dictionaries:

  • vasomotor centre — a collection of nerve cells in the medulla oblongata that receives information from sensory receptors in the circulatory system (see baroreceptor) and brings about reflex changes in the rate of the heartbeat and in the diameter of blood vessels,… …   The new mediacal dictionary

  • Центр Сосудодвигательный (Vasomotor Centre) — скопление нервных клеток в продолговатом мозге, которые получают информацию от барорецепторов кровеносной системы, вызывая рефлекторные изменения частоты сердечных сокращений и просвета кровеносных сосудов, в результате чего у человека… …   Медицинские термины

  • centre — /ˈsɛntə / (say sentuh) noun 1. Geometry the middle point, as the point within a circle or sphere equidistant from all points of the circumference or surface, or the point within a regular polygon equidistant from the vertices. 2. a point, pivot,… …   Australian English dictionary

  • ЦЕНТР СОСУДОДВИГАТЕЛЬНЫЙ — (vasomotor centre) скопление нервных клеток в продолговатом мозге, которые получают информацию от барорецепторов кровеносной системы, вызывая рефлекторные изменения частоты сердечных сокращений и просвета кровеносных сосудов, в результате чего у… …   Толковый словарь по медицине

  • Cushing reflex — (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing s Law) is a physiological nervous system response to increased intracranial pressure (ICP) that… …   Wikipedia

  • Vasoconstriction — Narrowing of the blood vessels resulting from contracting of the muscular wall of the vessels. The opposite of vasodilation. * * * Narrowing of the blood vessel s. active v. reduced caliber of a vessel caused by increased tonus in the smooth… …   Medical dictionary

  • vasoactive — Influencing the tone and caliber of blood vessel s. * * * va·so·ac·tive .vā zō ak tiv adj affecting the blood vessels esp. in respect to the degree of their relaxation or contraction va·so·ac·tiv·i·ty ak tiv ət ē n, pl ties * * * adj. affecting… …   Medical dictionary

  • vasodilatation — SYN: vasodilation. * * * n. an increase in the diameter of blood vessels, especially arteries. This results from activation of the vasomotor centre in the brain, which brings about relaxation of the arterial walls and a consequent lowering of… …   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

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