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Female Reproductive Anatomy

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Presentation on theme: "Female Reproductive Anatomy"— Presentation transcript:

1 Female Reproductive Anatomy
Fallopian tube

2 Internal Genitals Fallopian tube Ovum

3 Ducts or duct structures that extend from ovaries to exterior
Internal Genitals Ducts or duct structures that extend from ovaries to exterior Essential Organs Ovaries (2) – female gonads; house ovum (eggs) Accessory Organs Fallopian tubes – serve as transport channels for ova and as site of fertilization Salpingitis – inflammation of fallopian tubes Uterus composed of cervix and the body located between rectum and bladder position is altered by age, pregnancy decreases in size at menopause Three layers Peritoneum – thin layer surrounding uterus Myometrium – middle, main muscle layer of uterus Endometrium – internal tissue layer where embryo attaches, or what sloughs off during menstruation endometriosis – endometrium grows outside of the uterus Vagina lining lubricates and stimulates penis; receptacle for semen transports tissue and blood shed during menstruation Hymen – mucous membrane bordering vagina in young girls

4 External Genitals

5 External Genitals Vulva Mons pubis
superior portion of genital area closest to abdomen Labia (majora and minora) protect clitoris Clitoris Erectile tissue homologous to male corpus cavernosum Sensory receptors Sex Glands Greater Vestibular glands Homologous to male bulbourethral glands Lesser Vestibular glands Mucous glands Mammary glands Milk secretion to nourish newborn 15-20 lactiferous ducts in each breast Perineum skin-covered region between vaginal orifice and rectum; may be torn during childbirth Episiotomy : when perineum is cut during labor

6 Breasts

7 Breasts Mammary glands – composed of alveloar sacs that produce milk
Lactiferous duct – transports milk to the nipple and out the breast Nipple – pore for milk secretion Areola – pigmented area surrounding nipple that contain sebaceous glands to dryness while nursing Change color from pink to brown when pregnant

8 Reproductive Cycle Ovarian Cycle Menstrual Cycle
Oocytes at birth; meiosis halts menstruation causes meiosis to resume in several oocytes meiosis halts until fertilization; if not fertilized, cell ruptures and is expelled during ovulation Oophoritis: inflammation of ovaries Menstrual Cycle Menses (1-5) Postmenstrual phase / Follicular phase (6-13) Ovulation (14) Premenstrual phase / Luteal phase (15-28)

9 Menses days 1-5 of a new cycle endometrial lining sloughs off
Menarche – first menstrual flow Amenorrhea – lack of menstrual flow Endometriosis – lining of uterus grows outside of uterus

10 Postmenstrual / Follicular phase
time between menses and ovulation (days 6-13) FSH and LH are released from the brain and travel in the blood to the ovaries. The hormones stimulate the growth of about eggs in the ovaries each in its own "shell," called a follicle and production of estrogen which changes in appearance, amount and consistency of cervical mucus High estrogen levels turn off the production of FSH One follicle in one ovary becomes dominant and continues to mature. Others stop growing and die. The dominant follicle continues to produce estrogen.

11 Ovulation day 14; mature follicle ruptures and expels ovum into pelvic cavity The rise in estrogen from the dominant follicle increases the amount of LH (responsible for ovulation) Dominant follicle releases its egg from the ovary (ovulation) Egg is captured by finger-like projections on the end of the fallopian tubes (fimbriae) which sweep the egg into the tube.

12 Premenstrual / Luteal phase
time between ovulation and menses (days 15-28) The empty follicle develops into a new structure called the corpus luteum. The corpus luteum secretes progesterone. Progesterone prepares the uterus for a fertilized egg to implant. If intercourse has taken place and a man's sperm has fertilized the egg, the fertilized egg (embryo) will travel through the fallopian tube to implant in the uterus. If the egg is not fertilized, it passes through the uterus. Not needed to support a pregnancy, the lining of the uterus breaks down and sheds, and the next menstrual period begins

13 Ovarian Follicle Development

14 Hormones GnRH – tells pituitary to release FSH/LH
FSH – stimulate follicle growth LH – stimulates growth of corpus luteum (promotes estrogen secretion) Estrogen secondary sex characteristics thickens the endometrium regulates menstrual cycle Produce lactiferous ducts Progesterone Promotes mammary gland production No fertilization: corpus luteum breaks down levels decrease endometrium sloughs off during menstruation If fertilized: secreted by corpus luteum levels increase further thickens endometrium Prolactin and Oxytocin – stimulates lactation Advantages of nursing Provides infant with necessary nutrients Provides passive immunity to infant Enhance emotional bond between mother and infant

15 Female Reproductive Hormones

16 Fertility Birth - approximately 1 million eggs
Puberty - only about 300,000 remain. 300 to 400 will be ovulated during a woman's reproductive lifetime. The eggs continue to degenerate during pregnancy, with the use of birth control pills, and in the presence or absence of regular menstrual cycles. Causes: problems with ovulation - Some signs that a woman is not ovulating normally include irregular or absent menstrual periods. blocked fallopian tubes due to pelvic inflammatory disease, endometriosis, or surgery from ectopic pregnancy physical problems with the uterus uterine fibroids Risk Factors age - about one third of couples in which the woman is over 35 have fertility problems stress poor diet athletic training being overweight or underweight tobacco smoking alcohol sexually transmitted diseases (STDs) health problems that cause hormonal changes

17 Menopause most women experience this stage after age 40 and spend a third of their life in this phase. Average age is 45-50 Stages Perimenopause starts years before your period stops ovaries gradually produce less estrogen Symptoms during this time include mood swings, hot flashes, and loss of sex drive. Menopause occurs when the ovaries no longer produce an egg every month and menstruation stops estrogen levels low Postmenopause lasts years after menopause continued decrease in estrogen – causes health risks

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