Umbilicus (Lat., the navel.) A round cicatrix or scar in the median line of the abdomen.
Urea (Lat. urina, urine). Chief solid constitutent of urine. Nitrogenous product of tissue decomposition.
Ureter (Gr. οὐρέω, to pass urine). The tube through which the urine is conveyed from the kidneys to the bladder.
Uvula (Lat. uva, a grape). The small, pendulous body attached to the back part of the palate.
Vaccine Virus (Lat. vacca, a cow, and virus, poison). The material derived from heifers for the purpose of vaccination,—the great preventive of smallpox.
Valvulae Conniventes. A name given to transverse folds of the mucous membrane in the small intestine.
Varicose (Lat. varix, a dilated vein). A distended or enlarged vein.
Vascular (Lat. vasculum, a little vessel). Pertaining to or possessing blood or lymph vessels.
Vaso-motor (Lat. vas, a vessel, and moveo, motum, to move). Causing motion to the vessels. Vaso-motor nerves cause contraction and relaxation of the blood-vessels.
Venæ Cavæ, pl. of Vena Cava. “Hollow veins.” A name given to the two great veins of the body which meet at the right auricle of the heart