KINS 1224 Chapter Notes - Chapter 27: Secondary Sex Characteristic, Gonadal Ridge, Male Reproductive System
22 Apr 2016
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27. 1 male reproductive system: sexual reproduction and development. Sexual reproduction requires the offspring to receive genes from 2 parents. Gametes meet and combine their genes in a zygote. The primary sex organs or gonads are organs that produce the gametes, testes of the male and ovaries of the female. The secondary sex organs are necessary for reproduction also. In the male, they constitute a system of ducts, glands, and the penis which focus on storage survival and conveyance of sperm. In the female they include the uterine tubes, uterus, and vagina concerned with uniting the sperm and egg and harboring the fetus. There are external and internal genitalia according to the location. The external genitalia are located in the perineum. Most of them externally visible except for the accessory glands of the female perineum. Secondary sex characteristics are features that distinguish the sexes and play a role in mate attraction.
