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Drugs and diseases reference index

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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «L»:

  1. Lactobacillus acidophilus Lactobacillus acidophilus
    Lactobacillus acidophilus: The bacteria found in milk and fermented milk products, particularly yogurt with "live cultures" of L. acidophilus. L. acidophilus assists with the digestive process within the intestinal tract. It can be decimated by the use of antibiotics, and many health professiona...
  2. Lactose Lactose
    Lactose: The sugar found in milk. Lactose is a large sugar molecule that is made up of two smaller sugar molecules, glucose and galactose. In order for lactose to be absorbed from the intestine and into the body, it must first be split into glucose and galactose. The glucose and galactose are then a...
  3. Lactose intolerance Lactose intolerance
    Lactose intolerance: Inability to digest lactose, a component of milk and most other dairy products. Lactose is sometimes also used as an ingredient in other foods, so those with a lactase deficiency should check labels carefully. The basis for this condition is lack of an enzyme called lactase ...
  4. Lacuna Lacuna
    Lacuna: A small pit, cavity, defect or gap....
  5. LAM LAM
    LAM: Lymphangioleiomyomatosis....
  6. Lamarckism Lamarckism
    Lamarckism: The theory of acquired characteristics put forth by Jean-Baptiste P.A. Lamarck (1744-1829), a French botanist, zoologist and biological philosopher. According to Lamarck, evolution occurs because organisms can inherit traits acquired by their ancestors. Giraffes can only survive by eati...
  7. LAMB syndrome LAMB syndrome
    LAMB syndrome: Acronym for Lentigines, Atrial myxomas, Mucocutaneous myxomas, and Blue nevi. Now included in the Carney complex. See: Carney complex....
  8. Lambert-Eaton myasthenic syndrome Lambert-Eaton myasthenic syndrome
    Lambert-Eaton myasthenic syndrome: An autoimmune disease characterized by weakness and fatigue of the proximal muscles (those near the trunk), particularly the muscles of the pelvic girdle (the pelvis and hips) and the thighs, with relative sparing of eye and respiratory muscles. Lambert-Eaton myast...
  9. Lamella Lamella
    Lamella: A thin leaf, plate, disk, wafer....
  10. Lamin A Lamin A
    Lamin A: Abbreviated LMNA. A gene on chromosome 1 that encodes a protein which is a key component of the membrane surrounding the cell nucleus. Mutations in the LMNA gene are responsible for a number of genetic disorders including: Progeria syndrome, Emery-Dreifuss muscular dystrophy type 2, Limb...
  11. Lamin A/C Lamin A/C
    Lamin A/C: The lamin family of proteins that make up the nuclear lamina, a matrix of protein located next to the inner nuclear membrane. Also known as LMNA. Lamin proteins are involved in nuclear stability, chromatin structure and gene expression. There are two types of mammalian lamin, A and B. Thr...
  12. Lamina Lamina
    Lamina: A plate or layer. For example, the lamina arcus vertebrae, usually just called the lamina, are plates of bone in each vertebral body....
  13. Laminaria Laminaria
    Laminaria: A small rod-shaped piece of dried seaweed; when placed within the cervix, a laminaria causes it to gradually dilate (widen). The species of seaweed serving this purpose is Laminaria digitata....
  14. Laminectomy Laminectomy
    Laminectomy: A surgical procedure in which the posterior arch of a vertebra is removed. Laminectomy is done to relieve pressure on the spinal cord or on the nerve roots that emerge from the spinal canal. The procedure may be used to treat a slipped or herniated disk or to treat spinal stenosis....
  15. Laminopathy Laminopathy
    Laminopathy: A disease due to mutation of the lamin A/C gene. The laminopathies include: Emery-Dreifuss muscular dystrophy type 2, familial partial lipodystrophy, limb girdle muscular dystrophy type 1B, dilated cardiomyopathy, familial partial lipodystrophy, Charcot-Marie-Tooth disorder type 2B1, ...