Columbia Encyclopedia

(Encyclopedia) vomiting, ejection of food and other matter from the stomach through the mouth, often preceded by nausea. The process is initiated by stimulation of the vomiting center of the brain by nerve impulses ...

(Encyclopedia) Warren, J. Robin (John Robin Warren), 1937–, Australian pathologist, grad. Univ. of Adelaide (M.B., B.S., 1961). He spent most of his career (1968–99) as a pathologist at the Royal Perth Hospital....

(Encyclopedia) Ramazzini, Bernardino bārnärdēˈnō rämät-tsēˈnē [key], 1633–1717, Italian physician. He was professor at Modena (1682–1700) and at Padua until 1714. He is often called the father of indus...

(Encyclopedia) spastic paralysis, form of paralysis in which the part of the nervous system that controls coordinated movement of the voluntary muscles is disabled. In spastic paralysis the nerves controlling muscle...

(Encyclopedia) angioplasty ănˈjēōplăsˌtē [key], any surgical repair of a blood vessel, especially balloon angioplasty or percutaneous transluminal coronary angioplasty, a treatment of coronary artery disease....

(Encyclopedia) Evans, Sir Martin John, British geneticist, Ph.D., University College London, 1969. After serving on the faculty at University College London (1966–78) and Cambridge (1978–99), he became a profess...

(Encyclopedia) eye fly, common name for a group of small flies of the family Chloropidae. Eye flies are common in parts of California and in the S United States. They inhabit grasslands and meadows and breed mainly ...

(Encyclopedia) memory, in psychology, the storing of learned information, and the ability to recall that which has been stored. It has been hypothesized that three processes occur in remembering: perception and regi...

(Encyclopedia)  CE5 Thyroid gland thyroid gland, endocrine gland, situated in the neck, that secretes hormones necessary for growth and proper metabolism. It consists of two lobes connected by a narrow segment ca...

(Encyclopedia) salmonellosis sălˌmənĕlōˈsĭs [key], any of a group of infectious diseases caused by intestinal bacteria of the genus Salmonella, including typhoid fever, paratyphoid fever, blood poisoning, and...