Osmosis.—Transudation of fluids through membrane.
Osseous.—Bony.
Ova.—Plural of egg.
Ovary.—Almond-shaped body in which the ova are developed.
Oviducts.—Tubes which convey the ova from ovaries to uterus.
Ovum.—An egg.
Oxygenation.—The process of combining with oxygen.
Parietes.—Walls of a cavity.
Parturition.—Childbirth.
Pathological.—Morbid, diseased.