1 / 17

Chapter 26, part B

Chapter 26, part B. Reproduction and Development. Spermatogenesis: Sperm Production in the Testis. Seminiferous tubules Spermatids Spermatocytes Spermatozoa Sertoli cells Interstitial tissue Leydig cells Capillaries. Spermatogenesis: Sperm Production in the Testis.

melody
Download Presentation

Chapter 26, part B

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 26, part B Reproduction and Development

  2. Spermatogenesis: Sperm Production in the Testis • Seminiferous tubules • Spermatids • Spermatocytes • Spermatozoa • Sertoli cells • Interstitial tissue • Leydig cells • Capillaries

  3. Spermatogenesis: Sperm Production in the Testis Figure 26-9b-e: ANATOMY SUMMARY: Male Reproduction

  4. Spermatozoa Structure and Functions in Review • Head • Acrosome: • Nucleus: • Midpiece • Centrioles: • Mitochondria: • Tail: flagellum • Microtubules: Figure 26-10: Sperm structure

  5. Regulation of Spermatogenesis • GnRH  LH  Leydig cells  testosterone  20 sex charact. • GnRH  FSH  Sertoli cells  spermatoctye maturation • Inhibin feedback – FSH, testosterone – short & long loops

  6. Regulation of Spermatogenesis Figure 26-11: Hormonal control of spermatogenesis

  7. Female Reproductive Anatomy and Physiology: Overview • Ovary • Fallopian tube • Fimbriae • Uterus • Cervix • Endometrium • Vagina • Clitoris • Labia

  8. Female Reproductive Anatomy and Physiology: Overview Figure 26-12b: ANATOMY SUMMARY: Female Reproduction

  9. Ovary: Details of Histology & Physiology • Follicle • Oocytes • Thecal cells • Granulosa cells • Estrogen •  Corpus luteum • Corpus luteum • Progesterone • Inhibin

  10. Ovary: Details of Histology & Physiology Figure 26-12d: ANATOMY SUMMARY: Female Reproduction

  11. Menstrual Cycle: Egg Maturation, and Endometrial Growth • Follicular phase • Egg matures • Ovulation • Egg released • Luteal phase • Corpus luteum • Endometrium • Prep for blastocyst • No Pregnancy • Menses Figure 26-13: The menstrual cycle

  12. Endocrine Control of Menstrual Cycle: Follicular Phase • FSH stimulates follicular development • Estrogen: + feedback, limits more follicles

  13. Endocrine Control of Menstrual Cycle: Ovulation •  Estrogen  LH "surge" & FSH spike  egg release • Inhibin pushes FSH down ,  new follicle development

  14. Endocrine Control of Menstrual Cycle: Follicular Phase and Ovulation Figure 26-14a,b: Hormonal control of the menstrual cycle

  15. Endocrine Control of Menstrual Cycle: Luteal phase • Granulosa cells form corpus luteum  progesterone •  progesterone & estrogen maintain endometrium • Inhibin continues to limit new follicular development

  16. Endocrine Control of Menstrual Cycle: Late Luteal phase • Pregnancy: maintain  progesterone, estrogen & inhibin • No pregnancy:  progesterone, estrogen & inhibin • Menses,  FSH & LH  new follicle development

  17. Endocrine Control of Menstrual Cycle: Luteal phase and Late Luteal phase Figure 26-14c, d: Hormonal control of the menstrual cycle

More Related