Anatomy Lecture 29

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Anatomy Lecture 29
2011-03-03 17:27:01

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  1. Components of the system
  2. lecture notes
  3. Ovaries:
    • paired organs
    • located near lateral walls of the pelvis
    • 5 cm long, 2.5 cm wide and 8 mm thick
    • ovarian ligaments anchors the ovary to the uterus
    • suspensory ligaments anchor the ovary to the pelvic wall
    • broad ligament - fold of peritoneum that tents over the internal reproductive structures
    • tunica albuginea layer of dense connective tissue surrounding each ovary
    • ovulation rupture of a Graafian follicle ejecting the egg from the ovary
  4. lecture notes
  5. blood supply to the ovaries:
    • ovarian arteries
    • ovarian branch of the uterine arteries
    • ovarian veins
    • blood vessels travel through the suspensory ligaments
  6. cortex of the ovaries:
    • home of the gamete
    • contains the ovarian follicles:
    • primordial follicle: one layer of follicular cells surrounding the egg
    • primary follicle: two or more layers of granulosa cells surrounding the egg
    • secondary follicle: presence of antrum
    • Graafian or tertiary follicle: mature follicle
  7. lecture notes
  8. corpus luteum:
    • ruptured follicle after ovulation
    • produces progesterone (pro gestation) and to a lesser
    • extent estrogen
    • if fertilization does not occur the corpus luteum degenerates
  9. lecture notes
  10. medulla of cortex:
    • inner region of the ovary
    • contains blood vessels, nerves and lymphatics
  11. lecture notes
  12. Female Duct System:
    • uterine tubes (also called the fallopian tubes or oviducts):
    • 10-13 cm long
    • wall of the tube consists of three layers - infundibulum, ampulla, isthmus
    • epithelium is ciliated and non-ciliated simple columnar
    • muscularis is composed of inner circular and outer longitudinal layers
    • serosa
  13. lecture notes
  14. infundibulum:
    • funnel-shaped distal end that opens into the peritoneal cavity
    • fimbriae
    • functions to capture the egg after it is ovulated
  15. lecture notes
  16. ampulla:
    • longest and widest portion of the tube
    • fertilization normally occurs within this region of the uterine tube
  17. lecture notes
  18. isthmus:
    • proximal portion
    • passes through uterine wall\
    • opens into the lumen of the uterus
  19. lecture notes
  20. clinical concerns with the uterine tubes:
    • ectopic pregnancy
    • tubal pregnancy
    • spread of infection
  21. lecture notes