1 / 15

The video and narration in this presentation concerns the Female Reproductive System

Warning!. The video and narration in this presentation concerns the Female Reproductive System and uses explicit graphics and terminology dealing with this subject matter. Some material may not be suitable for younger viewers. Marieb’s Human Anatomy and Physiology Ninth Edition

rhowery
Download Presentation

The video and narration in this presentation concerns the Female Reproductive System

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. Warning! The video and narration in this presentation concerns the Female Reproductive System and uses explicit graphics and terminology dealing with this subject matter. Some material may not be suitable for younger viewers.

  2. Marieb’s Human Anatomy and Physiology Ninth Edition Marieb w Hoehn Chapter 27 Female Reproductive System Lecture 19 Part 1: Overview; Ovaries/Ovarian Cycle

  3. Functions of the Female Reproductive System • Produce and maintain sex cells (eggs) – a function of the ovaries, the primary sex organ • Transport eggs to site of fertilization • Produce female sex hormones • Provide favorable environment for development of offspring • Move offspring to outside (birth)

  4. Organs of the Female Reproductive System (In anteflexion) (Skene’s glands; lesser vestibular glands) (Bartholin’s glands) Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001

  5. Ovaries and Their Attachments Oophorectomy – removal of one or both ovaries Fold of peritoneum that attaches to sides and floor of pelvic cavity (limits side-to-side movement and rotation) Posterior view Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001

  6. Overview of Female Reproductive Cycle Figure from: Hole’s Human A&P, 12th edition, 2010

  7. Overview of the Ovarian Cycle Ovarian cycle – events occurring monthly in an ovary (oocyte growth and meiosis occur); cycle is usually about 28 days long Figure from: Hole’s Human A&P, 12th edition, 2010 Two phases: 1) Follicular phase 2) Luteal phase

  8. Oogenesis Oogonia = stem cells Process stops in meiosis I (Prophase) Stimulated by FSH/LH About 2 million primary oocytes at birth. By puberty, there are about 400,000. Fewer than 400-500 will be released during a female’s reproductive life. Probably fewer than 10 will be fertilized. How does oogenesis differ from spermatogenesis? How is it the same?

  9. Ovarian Cycle – Preovulatory (Follicular) Phase Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001 (Graafian) 1.5 cm Many Few One Thecal and granulosa cells produce estrogens 8-10 days after beginning of cycle 10-14 days (FSH) (FSH) LH Meiosis II started Meiosis I Estrogen

  10. Ovarian Cycle – Postovulatory (Luteal) Phase (Day 14) 12 days post ovulation Lipids used to synthesize progestins, e.g., progesterone (prepares uterine lining for implantation) LH If fertilization has not occurred LH Figure from: Martini, Anatomy & Physiology, Prentice Hall, 2001

  11. Ovulation Figure from: Hole’s Human A&P, 12th edition, 2010

  12. Review of Ovarian Cycle • Preovulatory (follicular) phase (Day 1-14) • FSH stimulates primordial follicle to develop • Primary follicle secretes estrogen (from cooperation of granulosa and thecal cells) • Tertiary follicle is a mature (Graafian) follicle • Postovulatory (luteal) phase (Day 15-28) • LH stimulates rupture of tertiary follicle (ovulation) • Secondary oocyte is released (still in meiosis II) • Corpus luteum develops from remnants of follicle • Corpus luteum secretes progesterone which prepares the uterus for implantation • If pregnancy does not occur, corpus luteum involutes to become the corpus albicans (scar tissue) and menstruation will occur

  13. Review • Function of the female reproductive system • Produce and maintain sex cells (eggs) – a function of the ovaries, the primary sex organ • Transport eggs to site of fertilization • Provide favorable environment for development of offspring • Move offspring to outside (birth) • Produce female sex hormones

  14. Review • Several ligaments hold female reproductive structures in place • Broad ligament • Suspensory ligament • Ovarian ligament • Uterosacral ligament • Peritoneum-lined recesses in female • Rectouterine pouch – separates uterus from colon • Vesciouterine pouch – separates uterus from urinary bladder

  15. Review • During oogenesis • Oogonia stop development in meiosis I (before birth) • Secondary oocytes, rather than mature gametes, are released monthly at ovulation • Ovarian cycle • Cycle is about 28 days long • Two main phases • Preovulatory (follicular) – 14 days • Postovulatory (luteal) – 14 days

More Related