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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. Nocturnal amblyopia Nocturnal amblyopia
    Nocturnal amblyopia: Amblyopia refers to blindness so nocturnal amblyopia is, literally, night blindness. Listed in medical dictionaries under "Nyctalopia" from the Greek nyct (night) + aloas (obscure or blind) + opsis (vision), the condition involves impaired vision in dim light and in the dark du...
  2. Nocturnal enuresis Nocturnal enuresis
    Nocturnal enuresis: Bedwetting at night. From the Greek "enourin" meaning "to urinate in." ...
  3. Nodding syndrome Nodding syndrome
    Nodding syndrome: A mysterious disease of children that causes seizures, growth retardation (stunted growth), mental retardation and often, but not invariably, death. Some children with the syndrome appear to recover. Head nodding while eating is the first symptom. So far the disease has only been ...
  4. Node Node
    Node: Literally a knot, a node is a collection of tissue. For example a lymph node, is a collection of lymphoid tissue. A nodule is a small node, a little collection of tissue. ...
  5. Node, atrioventricular Node, atrioventricular
    Node, atrioventricular: The atrioventricular (AV) node is an electrical relay station between the atria (the upper) and the ventricles (the lower chambers of the heart). Electrical signals from the atria must pass through the AV node to reach the ventricles. The AV node is one of the major element...
  6. Node, AV Node, AV
    Node, AV:AV node: The AV node (AV stands for atrioventricular) is an electrical relay station between the atria (the upper) and the ventricles (the lower chambers of the heart). Electrical signals from the atria must pass through the AV node to reach the ventricles. The AV node is one of the ...
  7. Node, Heberden Node, Heberden
    Node, Heberden: A small fixed bump on the finger, usually at the last joint of the finger, Heberden's node is a calcified spur of the joint (articular) cartilage and is a sign of osteoarthritis. Named for the English physician William Heberden (1710-1801) who made a number of celebrated medica...
  8. Node, SA Node, SA
    Node, SA: The SA node (SA stands for sinoatrial) is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to c...
  9. Node, sentinel lymph Node, sentinel lymph
    Node, sentinel lymph: The first lymph node ("gland") to receive lymphatic drainage from a tumor. Which lymph node is the sentinel node for a given tumor is determined by injecting around the tumor a tracer substance that will travel through the lymphatic system to the first draining (sentinel) nod...
  10. Node, sinoatrial Node, sinoatrial
    Node, sinoatrial: The sinoatrial is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to contract and pump blo...
  11. Node, sinus Node, sinus
    Node, sinus: The sinus node is one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly designed system generates electrical impulses and conducts them throughout the muscle of the heart, stimulating the heart to contract and pump blood. ...
  12. Nodes, Osler's Nodes, Osler's
    Nodes, Osler's: A diagnostic sign of bacterial infection of the heart (subacute bacterial endocarditis). These are small (the size of split peas), tender, transient nodules in the pads of fingers and toes and the palms and soles. Named for the Canadian-born physician Sir William Osler (1849-1...
  13. Nodular Nodular
    Nodular: Bumpy. ...
  14. Nodular hyperplasia of the prostate Nodular hyperplasia of the prostate
    Nodular hyperplasia of the prostate: See: Benign prostatic hyperplasia....
  15. Nodular melanoma Nodular melanoma
    Nodular melanoma: See: Melanoma, nodular....