1. conception the body's system of glands that produce hormones. 2. eggs the union of the male gamete (sperm cell) and the female gamete (egg cell). 3. endocrine an organ or group of cells that secretes a chemical substance of the body. 4. fertilization female reproductive cells. 5. gland female gonads. 6. hormone the fertilization of a female egg cell with a male sperm cell. 7. ovary, ovaries a chemical substance produced by the glands of the endocrine system in order to control specific tissues and organs.