Columbia Encyclopedia

Search results

500 results found

papaverine

(Encyclopedia)papaverine pəpăvˈərēn [key], alkaloid found in opium that acts as a muscle relaxant and vasodilator. The drug relaxes the smooth muscle of the larger blood vessels and is used to increase the blo...

erythroblastosis fetalis

(Encyclopedia)erythroblastosis fetalis ərĭthˌrəblăstōˈsĭs [key], hemolytic disease of a newborn infant caused by blood group incompatibility between mother and child. Although the Rh factor is responsible f...

umbilical cord

(Encyclopedia)umbilical cord ŭmbĭlˈĭkəl [key], cordlike structure about 22 in. (56 cm) long in the pregnant human female, extending from the abdominal wall of the fetus to the placenta. Its chief function is t...

Drew, Charles Richard

(Encyclopedia)Drew, Charles Richard, 1904–50, African-American physician, b. Washington, D.C. A surgeon and a professor at Howard Univ. (1935–36; 1942–50), he developed a means of preserving blood plasma for ...

STP

(Encyclopedia)STP or standard temperature and pressure, standard conditions for measurement of the properties of matter. The standard temperature is the freezing point of pure water, 0℃ or 273.15K. The standard...

serum

(Encyclopedia)serum: see blood.

plasma, biological

(Encyclopedia)plasma, biological: see blood.

Dalton's law

(Encyclopedia)Dalton's law [for John Dalton], physical law that states that the total pressure exerted by a homogeneous mixture of gases is equal to the sum of the partial pressures of the individual gases. The par...

artery

(Encyclopedia)artery, blood vessel that conveys blood away from the heart. Except for the pulmonary artery, which carries deoxygenated blood from the heart to the lungs, arteries carry oxygenated blood from the hea...

sickle cell disease

(Encyclopedia)sickle cell disease or sickle cell anemia, inherited disorder of the blood in which the oxygen-carrying hemoglobin pigment in erythrocytes (red blood cells) is abnormal. This “hemoglobin-S” crysta...