Lecture 6 Reproduction and Stress

Lecture 6 Reproduction and Stress - Steroid hormones...

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Hypothalamus Portal Veins Gondotropin releasing hormone (GnRH) Steroid hormones regulate reproduction. Ovaries and Testes Brain receives signals Anterior pituitary Luteinizing hormone (LH) Follicle stimulating hormone (FSH) Steroid production and release Estrogen from ovaries Testosterone from testes Negative - - The inhibition of a process
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The testes have 2 major functions. 1. Spermatogenesis 2. Testosterone production Production of sperm (the male gamete or sex cell) 1.
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he male reproductive tract is specialized for sperm product Testis Seminiferous tubules produce sperm Epididymous stores sperm Fig. 51.7 Sperm at various Stages of maturity Mature sperm
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Leydig cells Sertoli cells -Source of testosterone -Sperm production -Follicle stimulatin hormone (FSH) -Luteinizing hormone (LH) The testes contain 2 major cell types.
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The role of hormones in male reproductive function Fig. 51.8 1) LH stimulates Leydig cells to produce testosterone ( T ) 2) FSH and T act together to stimulate Sertoli cells Spermatogenesis 1 2 Testosterone also underlies Secondary sex characteristics Testosterone negative feedback Next
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Testosterone also stimulates development of male secondary sex characteristics.
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Lecture 6 Reproduction and Stress - Steroid hormones...

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