B

beta cell
A type of cell in the endocrine pancreas that secretes the hormone insulin.
bile
A complex fluid secreted from the liver and its system of bile ducts into the small intestine.
bile acids and bile salts
Molecules derived from cholesterol and secreted into bile by liver cells.
biliary
Pertaining to bile, bile ducts and the gall bladder.
bilirubin
A metabollic waste product derived from the breakdown of heme (as from hemoglobin). Excreted from the body in bile.
blastocyst
A stage during early embryogenesis in mammals in which the embryo develops a fluid-filled interior and segregates into trophoblast and inner cell mass.
bolus
A mass of food ready to be swallowed or passing along the intestines. Used also by pharmacists to refer to large pills.
borborygmus
The "growling" sounds produced by propulsion of gas through the intestinal tract. Due to a pattern of motility called the migrating motor complex.
bovine
Pertaining to cattle.
brown fat
A type of adipose tissue involved in generating heat, especially in hybernating animals.
brush border
A term describing the microvillus-covered surface of small intestinal epithelial cells.

Last updated on 10/2/2004