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32-1 The Female Reproductive System Ovaries –Produce ova, estrogen, and progesterone –Medulla ~ nerves and lymphatic and blood vessels –Cortex ~ ovarian.

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Presentation on theme: "32-1 The Female Reproductive System Ovaries –Produce ova, estrogen, and progesterone –Medulla ~ nerves and lymphatic and blood vessels –Cortex ~ ovarian."— Presentation transcript:

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2 32-1 The Female Reproductive System Ovaries –Produce ova, estrogen, and progesterone –Medulla ~ nerves and lymphatic and blood vessels –Cortex ~ ovarian follicles Female System

3 32-2 Back

4 32-3 Ovaries and Ovum Formation Oogenesis Primordial follicles Primary oocyte Follicular cells Primary oocyte stimulated to continue meiosis At puberty Polar body Secondary oocyte Ovum, if fertilized Released during ovulation

5 32-4 Internal Accessory Organs – Female Fallopian tube – oviduct –Infundibulum and fimbriae Fringed, expanded end of fallopian tube near ovary Function to “catch” an ovum –Muscular tube Lined with mucous membrane and cilia Propels ovum toward uterus Internal Accessory Organs

6 32-5 Internal Accessory Organs – Female (cont.) Uterus –Receives embryo and sustains its development –Divisions –Wall ~ three layers Vagina –Extends from uterus to outside body –Rugae –Wall ~ three layers Internal Accessory Organs

7 32-6 Back

8 32-7 External Accessory Organs - Female Mammary glands –Secretion of milk –Structures Nipple Areola Alveolar glands

9 32-8 External Genitalia – Female Vulva –Labia majora Adipose tissue and skin Form the mons pubis –Labia minora Vascular folds of skin Form hood over clitoris Vestibule Bartholin’s glands Clitoris –Contains female erectile tissue –Rich in sensory nerves Perineum – between vagina and anus Female System

10 32-9 Erection, Lubrication, and Orgasm Nervous stimulation –Clitoris becomes erect –Bartholin’s glands activate –Vagina elongates Orgasm –Sufficient stimulation of clitoris –Walls of uterus and fallopian tubes contract to propel sperm

11 32-10 Female Reproductive Hormones Hypothalamus secretes GnRH GnRH Anterior pituitary releases FSH & LH Stimulates Ovaries to produce estrogen and progesterone  Estrogen and progesterone are responsible for development of secondary sex characteristics

12 32-11 Reproductive Cycle Menstrual cycle –Regular changes in uterine lining –Shedding of lining and bleeding Menarche – first menstrual period Menopause – termination of cycle due to normal aging of ovaries

13 32-12 Follicular cells become corpus luteum, which secretes progesterone Anterior pituitary releases FSH Uterine lining thickens Ovarian follicle matures and secretes estrogen Then releases LH Triggers ovulation Lining more vascular and glandular Without fertilization  Corpus luteum degenerates  Estrogen and progesterone levels fall  Uterine lining breaks down – menses starts  Cycle begins again with release of FSH Reproductive Cycle (cont.)

14 32-13 Apply Your Knowledge True or False: ___ The ovaries only produce estrogen. ___ Ovulation is the process of ovum formation. ___ The fallopian tube is also called the oviduct. ___ The endometrium is the outer layer of the uterine wall. ___ Alveolar glands produce milk. ___Oxytocin induces the alveolar glands to deliver milk through the nipples. ___ Menarche is the termination of the menstrual cycle. ___ Menopause occurs due to normal aging of the ovaries. F T F T F F T F ANSWER: first lactiferous ducts inner layer Oogenesis produce estrogen and progesterone YIPPEE!


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