Infertility and In Vitro Fertilization. ... Unlike the simpler process of artificial insemination -- in which sperm is placed in the uterus and conception happens otherwise normally -- IVF involves combining eggs and sperm outside the body in a laboratory. Once an embryo or embryos form, they are then placed in the uterus.
Progression. A principle that refers to the gradual increase in the amount of exercise or overload sustained over a specified period of time Recovery Heart Rate.
