Generative Organs. Syn., genital, reproductive, sexual; those organs in the male and female by means of which a new being is created. Genital. See Generative. Gestation. See pregnancy. Gonorrhea. A highly contagious venereal disease, characterized by an inflammatory discharge of mucus from the urethra and prepuce in the male, and from the urethra and the vagina in the female. Graafian Follicles. Minute ovarian vesicles which contain the ova. Hemorrhoids. Piles or tumors at or within the anus, and consisting of enlarged veins. Hymen. The semilunar fold situated at the outer orifice of the vagina in the virgin. Hypertrophy. The increased activity of a part which leads to an increase in its bulk. Hypochondriasis. Morbid feelings concerning the health and simulating disease. Impregnation. See Conception. Infectious. See Contagious. Katabolic Nerves are those nerves which stimulate the breaking down of tissue. Labia Majora. Two thick folds of skin which extend backward from the mons veneris. Labia Minora. Nymphae; two very delicate folds of skin which are inside of and protected by the labia majora. Labor. See Parturition. Lactation. The secretion of milk; nursing, suckling the child. Lactiferous Ducts. The milk ducts. Leucorrhea. Whites; a whitish or yellowish discharge from the vagina. Lochia. A discharge which follows labor and which lasts for about two weeks. Lying-in. The period which follows childbed. Lymphatics. The vessels in which the lymph is carried. Mammae. The mammary glands; the breasts. Marital Relations. See Coitus. Massage. A systematic kneading of the muscles. Meatus Urinarius. The external orifice of the urethra. Meconium. The first discharge from the infant's bowel after birth, and which had collected in the intestines during the pregnancy. Medulla. The base of the brain at its junction with the spinal cord. Menopause. Climacteric, change of life, the time of the natural cessation of the monthly sickness. Menorrhagia. An excessive menstrual flow. Menstruation. Menstrual period, menstrual flow, menses, monthly sickness, the monthly discharge of blood from the uterus, which, with certain exceptions, recurs monthly from about the age of thirteen to forty-six years. Metabolism. Transformation changes. Metamorphoses. Changes of shape or structure. Metrorrhagia. A flow of blood between the menstrual periods. Micturition. The act of passing water. Miscarriage. The expulsion of the fetus between the twelfth and twenty-eighth weeks. Molecular. Belonging to the molecules, or the minutest portion of anything. Mons Veneris. The uppermost part of the vulva, which is a fatty cushion covered with hair. Nerve-center. A nerve station from which orders are transmitted and where orders are received. Nubile. Puberty, that period of life in which young people of both sexes are capable of procreating children. Nymphae. See Labia minora.