The Reproductive System: Part A - Next2Eden

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HPG Axis1. Hypothalamus releases gonadotropinreleasinghormone (GnRH)2. GnRH stimulates the anterior pituitary tosecrete FSH and LH3. FSH causes sustentacular cells to releaseandrogen-binding protein (ABP), whichmakes spermatogenic cell receptive totestosterone4. LH stimulates interstitial cells to releasetestosteroneCopyright © 2010 Pearson Education, Inc.
HPG Axis5. Testosterone is the final trigger forspermatogenesis6. Feedback inhibition on the hypothalamusand pituitary results from• Rising levels of testosterone• Inhibin (released when sperm count is high)Copyright © 2010 Pearson Education, Inc.
Page 1 and 2:
PowerPoint ® Lecture Slidesprepare
Page 3 and 4:
Reproductive System• Sex hormones
Page 6 and 7: PeritoneumSeminalvesicleAmpulla ofd
Page 8 and 9: The Scrotum• Temperature is kept
Page 10 and 11: The Testes• Sperm are conveyed th
Page 12 and 13: Blood vesselsand nervesSpermatic co
Page 14: Seminiferoustubule(c)Interstitial c
Page 17 and 18: The Penis• External anatomy inclu
Page 19 and 20: The Male Duct System• Epididymis
Page 21 and 22: Blood vesselsand nervesSpermatic co
Page 24 and 25: UreterAmpulla of ductus deferensUri
Page 26 and 27: Accessory Glands: Prostate• Encir
Page 28 and 29: UreterAmpulla of ductus deferensUri
Page 30 and 31: Semen• Alkalinity neutralizes the
Page 32 and 33: Male Sexual Response• Erection:
Page 34 and 35: Copyright © 2010 Pearson Education
Page 36 and 37: Meiosis• Gamete formation involve
Page 38 and 39: MEIOSIS IIProphase IIMetaphase IIMe
Page 40 and 41: Number ofdivisionsSynapsis ofhomolo
Page 42 and 43: Copyright © 2010 Pearson Education
Page 44 and 45: Mitosis of Spermatogonia• Begins
Page 46 and 47: Meiosis: Spermatocytes to Spermatid
Page 48 and 49: Spermiogenesis: Spermatids to Sperm
Page 50 and 51: Approximately 24 daysGolgiapparatus
Page 52 and 53: Role of Sustentacular Cells• Tigh
Page 54 and 55: Role of Sustentacular Cells• Tigh
Page 58 and 59: 1Anteriorpituitary82GnRHVia portalb
Page 60 and 61: Mechanism and Effects of Testostero
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The Reproductive System: Part A - Next2Eden

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