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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «N»:

  1. Nucleus, arcuate Nucleus, arcuate
    Nucleus, arcuate: See: Arcuate nucleus....
  2. Nucleus, caudate Nucleus, caudate
    Nucleus, caudate: See: Caudate nucleus....
  3. Nude mice Nude mice
    Nude mice: See: Nude mouse....
  4. Nude mouse Nude mouse
    Nude mouse: A mutant mouse said to be nude because it is hairless due to the presence two copies of the gene "nu" (for nude). Nude mice have no thymus and therefore no T cells, a class of lymphocytes that depend on the thymus to develop. For lack of T cells, nude mice cannot reject tumors or transpl...
  5. Null mutation Null mutation
    Null mutation: A mutation (a change) in a gene that leads to its not being transcribed into RNA and/or translated into a functional protein product. For example, a null mutation in a gene that usually encodes a specific enzyme leads to the production of a nonfunctional enzyme or no enzyme at all....
  6. Nullipara Nullipara
    Nullipara: A woman who has never given birth to a child. ...
  7. Nulliparous Nulliparous
    Nulliparous: Never having given birth to a child. ...
  8. Numb Numb
    Numb: Numb, or numbness is a loss of the sensation of feeling in an area of the body. Numbness results from damage to, or impaired function of, the nerves that supply the affected area. The function of the nerves may be impaired by numerous causes including some chronic diseases (diabetes mellitus, ...
  9. Numbness (Numb) Numbness (Numb)
    Numb: Numb, or numbness is a loss of the sensation of feeling in an area of the body. Numbness results from damage to, or impaired function of, the nerves that supply the affected area. The function of the nerves may be impaired by numerous causes including some chronic diseases (diabetes mellitus, ...
  10. Nummular eczema Nummular eczema
    Nummular eczema: Coin-shaped patches of irritated skin-most common on the arms, back, buttocks, and lower legs that may be crusted, scaling, and extremely itchy. The word "nummular" is taken from the Latin "nummus," a small coin....
  11. Nurse Nurse
    Nurse: 1) A person trained, licensed, or skilled in nursing. 2) To feed an infant at the breast....
  12. Nurse assistant Nurse assistant
    Nurse assistant: A person who has completed a brief health-care training program, and who provides support services for RNs and LPNs. Also known as an orderly or, when certified by a state agency, a certified nurse aide (CNA)....
  13. Nurse practitioner Nurse practitioner
    Nurse practitioner: A registered nurse (RN) who has completed an advanced training program in a medical specialty such as pediatrics or internal medicine. Abbreviated NP. An NP may function as a primary direct provider of health care and prescribe medications. An NP may fill another role such as in ...
  14. Nurse, licensed practical Nurse, licensed practical
    Nurse, licensed practical: A nurse who has completed a one- or two-year training program in health care and earned a state license. LPNs provide direct patient care for people with chronic illness, in nursing homes, hospitals, and home settings. They assist RNs in caring for acutely ill patient...
  15. Nurse, licensed vocational Nurse, licensed vocational
    Nurse, licensed vocational: A nurse who has completed a one- or two-year training program in health care and earned a state license. LVNs provide direct patient care for people with chronic illness, in nursing homes, hospitals, and home settings. They assist RNs in caring for acutely ill patien...