| HOME Other Health Articles A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | Y | Z identical twins: Twins developing from a single fertilized ovum that splits into two clusters of cells during its early development. ileostomy: An artificial opening from the intestine. imperforate hymen Unusually thick hymen completely covering the entrance to the vagina. implantation: Embedding of the blastocyst in the uterus seven or eight days after conception. incest: Sexual intercourse between persons so closely related that they are forbidden by law to marry. incubation period: The period of time between exposure to an infectious disease and the appearance of its symptoms. induced abortion: Abortion intentionally brought on through the use of drugs or instruments. infanticide: The killing of an infant. infatuation: An attraction based on similarity to an idealized partner. inhibin: A protein that may be a hormone and that may inhibit secretion of the follicle-stimulating hormone from the pituitary gland. inhibited female orgasm: See orgasmic dysfunction. inhibited male orgasm See retarded ejaculation. nhibited sexual excitement: See erectile dysfunction. insecurity: Lacking self-confidence or self-assurance. in situ: In its natural or original position; localized. instillation: Introduction of a liquid into a cavity; instillation of saline or prostaglandins sometimes used to induce abortion during the second trimester. interstitial (Leydig) cells: The testosterone-secreting cells located between the seminiferous tubules of the testes. interstitial cell-stimulating hormone (ICSH): Pituitary hormone that stimulates the interstitial cells of the testes to secrete testosterone. intimacy: A state of warm friendship and the sharing of innermost feelings and emotions; develops through long association. intrapsychic: From within a person’s own mind. intrauterine device: A plastic birth control device that is placed inside the uterus and left there; believed to interfere with implantation of the fertilized ovum. in vitro fertilization: The fertilization of a human ovum by a sperm outside the body within a glass container. |