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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 - «B»:

  1. Bicuspid valve Bicuspid valve
    Bicuspid valve: One of the four valves of the heart, this valve is situated between the left atrium and the left ventricle. It permits blood to flow one way only, from the left atrium into the left ventricle This valve is more commonly called the mitral valve because it has two flaps (cusps)...
  2. Bicycle helmet Bicycle helmet
    Bicycle helmet: A well-known but often neglected device designed to protect the head of a bicyclist. Helmets decrease the risk of head injuries (traumatic brain damage) by about 85%. However, only about 18% of bicyclists in the US use helmets all or most of the time. Universal helmet use could preve...
  3. Biermer's anemia Biermer's anemia
    Biermer's anemia: A blood disorder caused by a lack of vitamin B12. Patients who have this disorder do not produce the substance in the stomach that allows the body to absorb vitamin B12. This substance is called intrinsic factor (IF). Biermer's anemia, better known as pernicious anemia (PA), i...
  4. Bietti crystalline dystrophy Bietti crystalline dystrophy
    Bietti crystalline dystrophy: A genetic eye disease that leads to progressive night blindness and visual field constriction and is characterized by the formation of crystals in the cornea (the clear covering of the eye), yellow shiny deposits on the retina, and progressive atrophy of the retina and ...
  5. Bifid Bifid
    Bifid: Cleft (split) in two. See, for example, bifid uvula....
  6. Bifid uvula Bifid uvula
    Bifid uvula: The uvula, the little V-shaped fleshy mass hanging from the back of the soft palate, is cleft or split. Cleft uvula is a common minor anomaly occurring in about 1% of whites and 10% of Native Americans. Persons with a cleft uvula should not have their adenoids removed because, without t...
  7. Big bone disease Big bone disease
    Big bone disease: See: Kashin-Beck disease....
  8. Big toe sign Big toe sign
    Big toe sign: An important neurologic examination based upon what the big toe (and other toes) do when the sole of the foot is stimulated. If the big toe goes up, that may mean trouble. The big toe response, also called the Babinski reflex, is obtained by stimulating the external portion (the out...
  9. BIID BIID
    BIID: Body integrity identity disorder....
  10. Bilateral Bilateral
    Bilateral: Having, or relating to, two sides. Bilateral is as opposed, for example, to unilateral (which means having, or relating to, one side)....
  11. Bilateral pneumonia Bilateral pneumonia
    Bilateral pneumonia: See: Pneumonia, bilateral....
  12. Bile Bile
    Bile: Bile is a yellow-green fluid that is made by the liver, stored in the gallbladder and passes through the common bile duct into the duodenum where it helps digest fat. The principal components of bile are cholesterol, bile salts, and the pigment bilirubin. An imbalance between these compon...
  13. Bile acid Bile acid
    Bile acid: An acid made by the liver that works with bile to break down fats. On a more technical level, bile acids are steroid carboxylic acids derived from cholesterol. The primary bile acids are cholic and chenodeoxycholic acids. They are conjugated with glycine or taurine before they are secret...
  14. Bile acid resin Bile acid resin
    Bile acid resin: Bile acid resins are substances that bind in the intestines with bile acids that contain cholesterol and are then eliminated in the stool. The major effect of bile acid resins is to lower LDL-cholesterol by about 10 to 20 percent. Small doses of resins can produce useful reduc...
  15. Bile duct cancer Bile duct cancer
    Bile duct cancer: An uncommon type of cancer that arises from the bile duct, the tube that connects the liver and the gallbladder to the small intestine. The part of the bile duct that is outside the liver is called the extrahepatic bile duct. Bile, a fluid made by the liver that breaks down fats ...