Anatomy of the Reproductive Systems

Anatomy of the Reproductive Systems - between sustentacular...

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Anatomy of the Reproductive Systems The reproductive systems are composed of the primary sex organs that produce gametes and the secondary sex organs that include the various ducts, glands and structures that are necessary for reproduction to occur. The Male Reproductive System The function of the male reproductive system is to produce and deliver sperm and to make the male sex hormones . Testes The testes are located in the scrotum and are comprised of several divisions that contain tubular structures known as seminiferous tubules . It is within the seminiferous tubules that sperm are "born". Each tubule is lined with a thick germinal epithelium composed of germ cells and large cells that form the walls of the seminiferous tubules. These sustentacular cells aid in sperm production (see Figure 4). Specialized tight junctions
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Unformatted text preview: between sustentacular cells form the blood-testis barrier , which protects sperm from the immune system. Interstitial cells between individual seminiferous tubules produce testosterone. Figure 4 Spermatic Ducts From the seminiferous tubules, sperm are transported through the rete testes and efferent ductules and into the epididymis. It is in the epididymis that sperm mature and are stored for up to 60 days. If not ejaculated, sperm degrade and are reabsorbed. If ejaculation does occur, sperm enter the ductus deferens, the ejaculatory duct and the urethra for expulsion from the body. Accessory Glands During ejaculation, the accessory glands of the male reproductive systems contribute a variety of substances to form semen. These contributions will be discussed later....
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This note was uploaded on 01/30/2012 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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