Reproductive System

Topics: Reproductive system, Menstrual cycle, Ovulation Pages: 4 (1100 words) Published: August 3, 2013
The Male Reproductive System
The release of FSH and LH stimulates cells in the testes to produce testosterone. FSH and testosterone stimulate the development of sperm. Once large numbers of sperm have been produced in the testes, the developmental process of puberty is completed. The reproductive system is now functional, meaning that the male can produce and release active sperm. The main function of the male reproductive system is to produce and deliver sperm.

The Female Reproductive System
The primary reproductive organs in the female are the ovaries. The ovaries are located in the abdominal cavity. The main function of the female reproductive system is to produce ova. In addition, the female reproductive system prepares the female's body to nourish a developing embryo. In contrast to the millions of sperm produced each day in the male reproductive system, the ovaries usually produce only one mature ovum, or egg, each month.

Sperm Cell
Head- which contains a highly condensed nucleus. At the tip of the head is a small cap that contains an enzyme vital to the process of fertilization. Midpiece- which is packed with energy-releasing mitochondria. Tail- which contains the flagellum, propels the cell forward.

Puberty
Puberty is a period of rapid growth and sexual maturation during which the reproductive system becomes fully functional. At the end of puberty, the male and female reproductive organs are fully developed. The start of puberty varies for everyone. It usually occurs any time between the ages of 9 and 15, and, on average, begins about one year earlier in females than in males. Puberty begins when the hypothalamus signals the pituitary to produce increased levels of two hormones that affect the gonads. The two hormones are follicle-stimulating hormone (FSH) and luteinizing hormone (LH) which stimulate the testes or ovaries which begins puberty.

Fertilization
During the menstrual cycle, an egg develops and is released...

Citations: http://www.vivo.colostate.edu/hbooks/pathphys/endocrine/hypopit/lhfsh
http://www.mayoclinic.com/health/medical/IM02745
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