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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «V»:

  1. Ventilation, positive pressure Ventilation, positive pressure
    Ventilation, positive pressure: The provision of oxygen under pressure by a mechanical respirator, a machine designed to improve the exchange of air between the lungs and the atmosphere. The device is basically designed for administering artificial respiration, especially for a prolonged period,...
  2. Ventilator Ventilator
    Ventilator: A ventilator is a machine which mechanically assists patients in the exchange of oxygen and carbon dioxide (sometimes referred to as artificial respiration)....
  3. Ventral Ventral
    Ventral: Pertaining to the front or anterior of any structure. The ventral surfaces of the body include the chest, abdomen, shins, palms, and soles. Ventral is as opposed to dorsal. From the Latin "venter" meaning belly. For a more complete listing of terms used in medicine for spatial orientat...
  4. Ventricle Ventricle
    Ventricle: A chamber of an organ. For example, the four connected cavities (hollow spaces) in the central portion of the brain and the lower two chambers of the heart are called ventricles. ...
  5. Ventricle, brain Ventricle, brain
    Ventricle, brain: One of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles, the third ventricle and the fourth ventricle: Lateral ventricles: The lateral ventricles are i...
  6. Ventricle, cerebral Ventricle, cerebral
    Ventricle, cerebral: One of a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles , the third ventricle and the fourth ventricle: Lateral ventricles: The lateral ventricle...
  7. Ventricle, fourth Ventricle, fourth
    Ventricle, fourth: One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of two lateral ventricles, the third ventricle and the fourth ventricle: Lateral ventricles: The lateral ventricles a...
  8. Ventricle, heart Ventricle, heart
    Ventricle, heart: One of the two lower chambers of the heart. The right ventricle is the chamber that receives blood from the right atrium and pumps it into the lungs via the pulmonary artery while the left ventricle is the chamber that receives blood from the left atrium and pumps it into the syst...
  9. Ventricle, lateral Ventricle, lateral
    Ventricle, lateral: One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of two lateral ventricles, the third ventricle and the fourth ventricle: Lateral ventricles: The lateral ventricles ...
  10. Ventricle, left Ventricle, left
    Ventricle, left: The ventricles are the two lower chambers of the heart. The left ventricle is the chamber that receives blood from the left atrium and pumps it out under high pressure to the body via the aorta....
  11. Ventricle, right Ventricle, right
    Ventricle, right: The ventricles are the two lower chambers of the heart. The right ventricle is the chamber that receives blood from the right atrium and pumps it under low pressure into the lungs via the pulmonary artery....
  12. Ventricle, third Ventricle, third
    Ventricle, third: One cavity in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of two lateral ventricles, the third ventricle and the fourth ventricle: Lateral ventricles: The lateral ventricles ar...
  13. Ventricles Ventricles
    Ventricles: 1, The right ventricle and the left ventricle, the lower two chambers of the heart. 2. Two or more of the four connected spaces within the central portion of the brain....
  14. Ventricular Ventricular
    Ventricular: Pertaining to the ventricles, the lower chambers of the heart, as in ventricular fibrillation and ventricular septal defect....
  15. Ventricular arrhythmias Ventricular arrhythmias
    Ventricular arrhythmias: Abnormal rapid heart rhythms (arrhythmias) that originate in the lower chambers of the heart (the ventricles). Ventricular arrhythmias include ventricular tachycardia and ventricular fibrillation. Both are life threatening arrhythmias most commonly associated with heart atta...