Ball-and-socket joint: A joint in which the round end of a bone fits into the cavity of another bone. The hip joint is a ball-and-socket joint.
- Balloon angioplasty
Balloon angioplasty: Coronary angioplasty is accomplished using a balloon-tipped catheter inserted through an artery in the groin or arm to enlarge a narrowing in a coronary artery. Coronary artery disease occurs when cholesterol plaque builds up (atherosclerosis) in the walls of the arteries to the heart. Angioplasty is successful in opening coronary arteries in 90% […]
- Balloon tamponade
Balloon tamponade: A procedure in which a balloon is inflated within the esophagus or stomach, to apply pressure on bleeding blood vessels, compress the vessels, and stop the bleeding. It is used in the treatment of bleeding veins in the esophagus (esophageal varices) and stomach. Also known as esophagogastric tamponade.
Bambino: The little child who is the infant in swaddling, the symbol of pediatrics, sculpted by the Florentine artist Andrea della Robbia (1437-1528).
- Band, chromosome
Band, chromosome: One of the transverse bands produced on chromosomes by differential staining techniques. Depending on the particular staining technique, the bands are alternating light and dark or fluorescent and nonfluorescent. Each human chromosome has a short arm (“p” for “petit”) and long arm (“q” for “queue”) separated by a centromere. The ends of the […]
- Band, Q
Band, Q: A form of chromosome band, one of the bright and dull fluorescent bands seen alternating along the length of chromosomes under ultraviolet light after the chromosomes are stained with quinacrine. The Q in Q band stands for Quinacrine, an agent used as an antimalarial agent and, in the laboratory, as a fluorescent dye.