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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «R»:

  1. Respiratory system Respiratory system
    Respiratory system: The organs that are involved in breathing. These include the nose, throat, larynx, trachea, bronchi, and lungs....
  2. Respiratory therapist Respiratory therapist
    Respiratory therapist: A person who has graduated from an approved respiratory therapist program and is qualified to provide respiratory care under the supervision of a physician. In the US, respiratory therapists may be is registered by the National Board for Respiratory Care....
  3. Respiratory therapy Respiratory therapy
    Respiratory therapy: Exercises and treatments designed to help patients maintain and recover lung function, such as with cystic fibrosis and after surgery....
  4. Response, Babinski Response, Babinski
    Response, Babinski: A neurologic reflex that constitutes an important medical examination based, believe it or not, upon what the big toe does when the sole of the foot is stroked. If the big toe goes up, that may mean trouble. The Babinski response is obtained by stimulating the external porti...
  5. Response, hyperglycemic Response, hyperglycemic
    Response, hyperglycemic: A response resulting in a high blood sugar and specifically elevating the level of the sugar glucose in the blood. Hyperglycemia is often found in diabetes mellitus. It occurs when the body does not have enough insulin or cannot use the insulin it has to turn glucose into...
  6. Response, plantar Response, plantar
    Response, plantar: The plantar response, also known as the Babinski response, is an important neurologic examination based upon what the toes do when the sole (the plantar surface) of the foot is stroked. If the big toe goes up, that may mean trouble. The plantar response is obtained by stimulati...
  7. Rest Rest
    Rest: 1. Repose. Relaxation. 2. A fragment of embryonic tissue that has been retained after the period of embryonic development. Also called an embryonic rest....
  8. Restenosis Restenosis
    Restenosis: Renarrowing, as in restenosis of a coronary artery after angioplasty. From the Greek "stenos" meaning narrow....
  9. Resting phase Resting phase
    Resting phase: More appropriately called interphase. The interval in the cell cycle between two cell divisions when the individual chromosomes cannot be distinguished, interphase was once thought to be the resting phase but it is far from a time of rest for the cell. It is the time when DNA is repli...
  10. Restitution Restitution
    Restitution: In cytogenetics, the spontaneous rejoining of broken chromosomes to reconstitute the original chromosome configuration....
  11. Restless leg syndrome Restless leg syndrome
    Restless leg syndrome: An uncomfortable creeping, crawling, tingling, pulling, twitching, tearing, aching, throbbing, prickling or grabbing sensation in the calves that occurs while sitting or while lying down. Whatever the nature of the sensation, the result is an uncontrollable urge to relieve it ...
  12. Restless legs Restless legs
    Restless legs: See: Restless leg syndrome....
  13. Restriction endonuclease Restriction endonuclease
    Restriction endonuclease: An enzyme from bacteria that can recognize specific base sequences in DNA and cut (restrict) the DNA at that site (the restriction site). Also called a restriction enzyme....
  14. Restriction enzyme Restriction enzyme
    Restriction enzyme: An enzyme from bacteria that can recognize specific base sequences in DNA and cut the DNA at that site (the restriction site). A restriction enzyme acts as a biochemical scissors. Also called a restriction endonuclease. A restriction enzyme is a protein produced by bacteria th...
  15. Restriction fragment length polymorphism Restriction fragment length polymorphism
    Restriction fragment length polymorphism: A difference in DNA between people that can be recognized by the use of a restriction enzyme. Referred to as an RFLP....