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We have got to be mature like cheddar used in this delicious snack Paper Time.

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Presentation on theme: "We have got to be mature like cheddar used in this delicious snack Paper Time."— Presentation transcript:

1 We have got to be mature like cheddar used in this delicious snack Paper Time

2 Reproduction Male Reproductive System Female Reproductive system

3 Primary Sex Organs vs. Accessories Primary makes gametes Accessories include – ducts, – genatalia – glands

4 Lets start with the easy stuff 1st Testicles Penis Seminal Vesicles Epididymis Vas Deferens Ejaculatory Duct Prostate Gland Bulbourethral gland Leydig Cell Sertoli Cell

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7 Mitosis vs Meiosis review Meiosis Mitosis

8 Describe Structure and Function of the gonads and accessories Testicles Penis Seminal Vesicles Epididymis Seminiferous Tubules Vas Deferens Ejaculatory Duct Prostate Gland Bulbourethral gland Chapter 27

9 Spermatogenesis Starts with 1 “spermatocyte” – Primary germ line End up with 4 spermatids How many chromosomes are in 1 spermatocyte? How many chromosomes are in 1 spermatid?

10 This meiosis happens in seminiferous tubules

11 Seminiferous tubules Lumen surounded by Sertoli Cells Help maintain liquid environment of lumen for sperm to develop Prevent blood from traveling to lumen

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14 Gap Junctions of sertoli cells Mitosis of primary spermatocye happens above gap junction Meiosis happens below gap junction between cell membranes

15 Hormones involved Sertoli cells release messengers in response – Testosterone (T) – Follicle Stimulating Hormone (FSH) – Luetenizing Hormone (LH) – Gonadotrpoin Releasing Hormone (GnRH)

16 Leydig Cells The ones that generate and release Testosterone (T) T essential for proliferation and differentiation of sperm

17 Hypothalamus – Pituitary Gland

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19 Quick write: How does the hypothalamus affect the testis?

20 Spermatogenesis Must be cooler than body temperature

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23 Erectile Tissue

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