220 likes | 258 Views
Chapter 28, part 3. The Reproductive System. SECTION 28-3 The Reproductive System of the Female. Principle organs of the female reproductive system. Ovaries Uterine tubes Uterus Vagina. Support and stabilization. Ovaries, uterine tubes and uterus enclosed within broad ligament
E N D
Chapter 28, part 3 The Reproductive System
Principle organs of the female reproductive system • Ovaries • Uterine tubes • Uterus • Vagina
Support and stabilization • Ovaries, uterine tubes and uterus enclosed within broad ligament • Mesovarium supports and stabilizes ovary
Figure 28.13 The Female Reproductive System Figure 28.13
The ovaries • Held in position by ovarian and suspensory ligaments • Blood vessels enter at ovarian hilus • Tunica albuginea covers ovary
Figure 28.14 The Ovaries and Their Relationships to the Uterine Tube and Uterus Figure 28.14a, b
Oogenesis • Ovum production • Occurs monthly in ovarian follicles • Part of ovarian cycle • Follicular phase (preovulatory) • Luteal phase (postovulatory)
Figure 28.15 Oogenesis Figure 28.15
The ovarian cycle • Steps in the ovarian cycle • Formation of primary, secondary, and tertiary follicles • Ovulation • Formation and degeneration of the corpus luteum • Degradation of the corpus luteum
Figure 28.16 The Ovarian Cycle Figure 28.16
Figure 28.16 The Ovarian Cycle Figure 28.16
The Uterine tubes • Uterine tubes (Fallopian tubes or oviducts) • Infundibulum • End closest to the ovary with numerous fimbriae • Ampulla • The middle portion • Isthmus • A short segment connected to the uterine wall
Each uterine tube opens directly into uterine cavity • Fertilization occurs in uterine tube • 12-24 hours after ovulation • During passage from infundibulum to uterus
Figure 28.17 The Uterine Tubes Figure 28.17a-c
The uterus • Muscular organ • Mechanical protection • Nutritional support • Waste removal for the developing embryo and fetus • Supported by the broad ligament and 3 pairs of suspensory ligaments
Uterus • Major anatomical landmarks • Body • Isthmus • Cervix • Cervical os (internal orifice) • Uterine cavity • Cervical canal • Internal os (internal orifice)
Uterine wall consists of three layers: • Myometrium – outer muscular layer • Endometrium – a thin, inner, glandular mucosa • Perimetrium – an incomplete serosa continuous with the peritoneum
Figure 28.18 The Uterus Figure 28.18a, b
Figure 28.18 The Uterus Figure 28.18c
Figure 28.19 The Uterine Wall Figure 28.19a
Figure 28.19 The Uterine Wall Figure 28.19b