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CHAPTER 22: THE REPRODUCTIVE SYSTEMS

IV.ORGANS OF THE MALE REPRODUCTIVE SYSTEM

See Fig 22.1, page 882.

A.TESTES= The primary male sex organs which produce sperm and male sex hormones.

1.ovoid structures held within the scrotum (outside the male body);

2.Internal Structure of testis:

See Fig 22.3 and Fig 22.4, page 884.

a.Each testis is divided into lobules;

b.Each lobule contains:

seminiferous tubules (production of sperm cells under the influence of what hormone?), which are separated by

interstitial cells (production of male sex hormones under the influence of what hormone?)

c.The seminiferous tubules unite and give rise to the epididymis on the outer surface of the testis.

3.Germinal Epithelium:

See Fig 22.5, page 885.

a.The seminiferous tubules are lined by stratified epithelium;

b.This germinal epithelium consists of two types of cells:

1.Spermatogenic cells which give rise to sperm cells;

2.Supporting (nurse) cells which support and nourish the spermatogenic cells.

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