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The Reproductive System The Female Reproductive System Part 2 Female Reproductive System Ovaries Produce female gametes (ova) Secrete female sex hormones Estrogen and progesterone Accessory ducts include Uterine tubes (oviducts, fallopian tubes) Uterus Maintains zygote development Vagina Receives male gametes Suspensory ligament of ovary Peritoneum Uterosacral ligament Perimetrium Rectouterine pouch Rectum Posterior fornix Cervix Anterior fornix Vagina Anus Urogenital diaphragm Greater vestibular (Bartholin’s) gland Copyright © 2010 Pearson Education, Inc. Infundibulum Uterine tube Ovary Fimbriae Uterus Round ligament Vesicouterine pouch Urinary bladder Pubic symphysis Mons pubis Urethra Clitoris External urethral orifice Hymen Labium minus Labium majus Figure 27.10 Ovaries Each about twice as large as an almond Retroperitoneal Ovarian ligaments Suspensory ligament of ovary Ovarian blood vessels Uterine (fallopian) tube Mesosalpinx Mesovarium Broad ligament Mesometrium Ovarian ligament Body of uterus Ureter Uterine blood vessels Isthmus Uterosacral ligament Lateral cervical (cardinal) ligament Lateral fornix Cervix (a) Copyright © 2010 Pearson Education, Inc. Fundus of uterus Ovary Lumen (cavity) of uterus Uterine tube Ampulla Isthmus Infundibulum Fimbriae Round ligament of uterus Endometrium Wall of uterus Myometrium Perimetrium Internal os Cervical canal External os Vagina Figure 27.12a Ovaries Follicles About 400,000 present at birth Some develop into mature ova at sexual maturity Maturation of a follicle occurs about every 28 days Ovulation Tunica albuginea Degenerating corpus luteum (corpus albicans) Germinal epithelium Primary follicles Ovarian ligament Cortex Oocyte Granulosa cells Late secondary follicle Mesovarium and blood vessels Vesicular (Graafian) follicle Antrum Oocyte Zona pellucida Theca folliculi Ovulated oocyte Corpus luteum Corona Developing radiata corpus luteum (a) Diagrammatic view of an ovary sectioned to reveal the follicles in its interior Medulla Figure 27.11a Female Duct System Uterine tubes Uterus Vagina Suspensory ligament of ovary Ovarian blood vessels Broad ligament Uterine (fallopian) tube Mesosalpinx Mesovarium Mesometrium Ovarian ligament Body of uterus Ureter Uterine blood vessels Isthmus Uterosacral ligament Lateral cervical (cardinal) ligament Lateral fornix Cervix (a) Fundus of uterus Ovary Lumen (cavity) of uterus Uterine tube Ampulla Isthmus Infundibulum Fimbriae Round ligament of uterus Endometrium Wall of uterus Myometrium Perimetrium Internal os Cervical canal External os Vagina Figure 27.12a Uterine (Fallopian) Tubes Extend from uterus to near ovary End in infundibulum Post-ovulation Cilia create currents, move ovum into uterine tube Fertilization normally takes place within tube Ectopic pregnancy Pelvic Inflammatory Disease Uterus Structure Body Main region Fundus Rounded superior region Isthmus Narrowed inferior region Layers Serosa Myometrium Endometrium Suspensory ligament of ovary Ovarian blood vessels Broad ligament Uterine (fallopian) tube Mesosalpinx Mesovarium Mesometrium Ovarian ligament Body of uterus Ureter Uterine blood vessels Isthmus Uterosacral ligament Lateral cervical (cardinal) ligament Lateral fornix Cervix (a) Fundus of uterus Ovary Lumen (cavity) of uterus Uterine tube Ampulla Isthmus Infundibulum Fimbriae Round ligament of uterus Endometrium Wall of uterus Myometrium Serosa Internal os Cervical canal External os Vagina Figure 27.12a Lumen of uterus Epithelium Capillaries Uterine glands Venous sinusoids Lamina propria of connective tissue Spiral (coiled) artery Straight artery Endometrial vein Smooth muscle fibers Radial artery Arcuate artery Uterine artery (b) Figure 27.13b Uterus Cervix Narrow neck, or outlet Projects into the vagina Common site for cancer Vagina Muscular tube from uterus (cervix) to outside the body Birth canal Organ of copulation Pathway for menstrual flow Lined by mucous membrane Acidic secretions retard bacterial growth Immune cells Suspensory ligament of ovary Ovarian blood vessels Broad ligament Uterine (fallopian) tube Mesosalpinx Mesovarium Mesometrium Ovarian ligament Body of uterus Ureter Uterine blood vessels Isthmus Uterosacral ligament Lateral cervical (cardinal) ligament Lateral fornix Cervix (a) Fundus of uterus Ovary Lumen (cavity) of uterus Uterine tube Ampulla Isthmus Infundibulum Fimbriae Round ligament of uterus Endometrium Wall of uterus Myometrium Perimetrium Internal os Cervical canal External os Vagina Figure 27.12a Hormonal Function of Ovaries Endocrine function Estrogen and progesterone production Development of reproductive organs Secondary sexual characteristics Affect protein anabolism Affect fluid and electrolyte balance Hormonal Function of Ovaries FSH and LH Produced by pituitary gland Human chorionic gonadotropin Produced by placenta More on these later…. External Genitalia Vulva Skin folds surrounding vaginal orifice Clitoris Erectile tissue Homologous to male penis Sexual arousal Accessory Organ Mammary glands Present in both males and females Modified sweat glands Glandular alveoli capable of hormone stimulated milk production Accessory Organ Mammary glands Breast cancer