16_CH_20_REP_ENDOCRINE1 (1)

16_CH_20_REP_ENDOCRINE1 (1) - Chapter 20 Reproduction: pp...

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Chapter 20 Reproduction: pp 674-696 Sexual Reproduction Endocrine Regulation of Reproduction Male Reproductive System Female Reproductive System Menstrual Cycle Fertilization, Pregnancy, Parturition Chorionic gonadotropin (p. 701)
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Male Reproductive System: Testes Two compartments: 1.   Seminiferous tubules – site of   spermatogenesis (gamete production).   Contain Sertoli cells ( FSH receptors ). 2.   Leydig or interstitial cells – found in the  spaces around the tubules ( LH receptors ),  testosterone  production.
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Fig. 20.12
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Fig 20.13: The anterior pituitary and testes
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Fig 20.15: Interactions between the two compartments of the testes
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Spermatogenesis: Male LH  s tim ulate s   Leydig cells ( LH receptors) to   s e c re te   testosterone ; te s to s te ro ne  a ls o   ta rg e ts   Sertoli cells in  seminiferous tubules to  pro duc e   spermatozoa  (s pe rm ato g e ne s is ). FSH  s tim ulate s   Sertoli cells to  pro duc e  b o th  spermatozoa inhibin  (a  pe ptide  ho rm o ne   tha t  inhibits FSH secretion).
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16_CH_20_REP_ENDOCRINE1 (1) - Chapter 20 Reproduction: pp...

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