Category: N

  • Nonpolar covalent bond

    A covalent bond in which the pair of electrons is shared equally between two atoms.  

  • Northern blotting method

    A blot analysis technique for analyzing a small portion of RNA. Operationally, this test is identical to Southern blotting except for the target (RNA) and the specific reagents used.  

  • Normal blood pressure

    A blood pressure between 100 and 120 mm Hg systolic and< 80 mm Hg diastolic.  

  • Negative blood pressure

    Blood pressure that is less than atmospheric pressure, as in the great veins near the heart.  

  • Neuromuscular block

    A disturbance in the transmission of impulses from a motor endplate to a muscle. It may be caused by an excess or deficiency of acetylcholine or by drugs that inhibit or destroy acetylcholine.  

  • Note blindness

    The inability to recognize musical notes, due to a lesion of the central nervous system.  

  • Nervous bladder

    A condition marked by the repeated desire to urinate, but doing so fails to empty the bladder.  

  • Neutral sitz bath

    Same as sitz bath, except temperature is 92° to 97°F (33.3° to 36. 1°C) or for foot bath 104° to 110°F (37.8° to 40°C), duration 15 to 60 min.  

  • Neutral bath

    A bath in which no circulatory or thermic reaction occurs, temperature 92° to 97°F (33.3° to 36.1° C).  

  • Nauheim bath

    A bath in which the body is immersed in warm water through which carbon dioxide is bubbled.