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Anatomy of female reproductive organs

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Female reproductive system
Female reproductive system
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Anatomy of female reproductive organs

  1. 1. Anatomy of female reproductive organs Prepared by Dr/Rehab Soliman Abd ElAliem Lecturer of obstetric and women health nursing
  2. 2. outlines 1-Anatomy of external reproductive organs - Monspubis - Labia majora - Labia minora - Clitoris - Vestibule - Uretheral orifice - Vaginal orifice - Perineum 2-Anatomy of internal reproductive organs - Ovaries - Uterus - Cervix - Vagina
  3. 3. General objective : At the end of this lecture ,the under graduate student can be able to • Demonstrate female reproductive organs. • Differentiate between external and internal reproductive organs. • Define external reproductive organs and classifications. • Describe internal reproductive organs and classifications. • List uterine supports of uterus. • Specific objective: • Explain the structure of female reproductive organs. • Illustrate external and internal reproductive organs. • Recognize the difference of uterine ligaments.
  4. 4. It consist of Bony pelvis & soft tissue, • soft tissue consists of: 1-External female genital organs {The Vulva}. 2-Internal female genital organs. Anatomy of female reproductive organs
  5. 5. The external female reproductive organs The Vulva consists of the following structures :- 1-The mons pubis or mons veneris: is a pad of fat, covered with pubic hair from the time of puberty Function: is the protection of the symphysis pubis during intercourse Location: over the symphysis pubis.
  6. 6. 2-The labia majora: are two folds of fat and areolar tissue(lage lips), covered with skin and pubic hair on the outer surface, it contain sweat and sebaceous (oil-secreting) glands . Function: is the protection of the vaginal introitus Location: arise in the mons veneris and merge into the perineum behind. 3-The labia minora : (smalllips) are two thin folds of hairless skin lying between the labia majora. Anteriorly, divide to enclose the clitoris, posteriorly, fuse forming the fourchette. Function: They lubricate the vulva, swell in response to stimulation, and are highly sensitive. Location: between the labia majora
  7. 7. 4-The clitoris: (corresponding to the male penis). It is a small erectile organ, very sensitive and highly vasculars Function: is sexual stimulation.( plays a part in the orgasm of sexual intercourse.) Location: It is located at the anterior junction of the labia minora. There are folds above and below the clitoris. The joining of the folds above the clitoris forms the prepuce. • 5-The vestibule: Location: the area in which the openings of the urethra and the vagina are situated & enclosed by the labia minora .it contain
  8. 8. • The urethral orifice Location : 2.5 cm posterior to the clitoris, the Skene’s glands are located on either side of the opening to the urethra. They secrete a small amount of mucus to keep the opening moist and lubricated for the passage of urine which are two small blind-ended tubules 0.5 cm long running within the urethral wall • The Vaginal orifice(Vaginal introitus) Location : occupies the posterior two-thirds of the vestibule. The orifice is partially closed by the hymen • The Hymen, a thin membrane which tears during sexual intercourse or during the birth of the first child. It has one or more openings to allow escape of menstrual blood. • Shape of Hymen: annular , cresentic , cribiform , Elastic , imperforate
  9. 9. • Bartholin's glands: are two small glands which open on either side of the vaginal orifice • Function: These are mucus-secreting, producing copious amounts during intercourse to act as a lubricant. 6- The perineal body The perineum is the most posterior part of the external female reproductive organs. This external region is located between the vulva and the anus. It is made up of skin, muscle, and fascia. The perineum can become lacerated or incised during childbirth and may need to be repaired with sutures. Incising the perineum area to provide more space for the presenting part is called an episiotomy. Function:play an important at function in supporting the reproductive organs.
  10. 10. II- Internal female genital organs
  11. 11. 1- The ovaries: (female gonads) comparable to the testes in the male & similar to almonds in size& shape. Each ovary weighs from 2 to 5 grams and is about 4 cm long, 2 cm wide and 1 cm thick. Location: Are located on either side of the uterus, below and behind the fimbriated ends of the ova ducts. Functions: The development and the release of the ovum and the secretion of the hormones estrogen ,progesterone and androgen are the two primary functions of the ovary. Structure: The ovary is composed of a medulla and cortex, covered with germinal epithelium.
  12. 12. • **The medulla: it is made of fibrous tissue and the ovarian blood vessels, lymphatics and nerves travel through it. The hilum where these vessels enter lies just where the ovary is attached to the broad ligament and this area is called the mesovarium (which carries the blood supply,lymphatic drainage and nerve supply of the ovary). . The medulla is the supporting framework • **Thecortex: It contains the ovarian follicles in different stages of development, surrounded by stroma. The outer layer is formed of a single layer of cuboidal cells, the germinal epithelium and fibrous tissue known as the tunica albuginea; the cortex is the functioning part of the ovary.
  13. 13. Relations: • Anterior: the broad ligaments. • Posterior: The intestines. • Lateral: the side wall of the pelvis. On left, the pelvic colon and its mesentery - On right, the appendix if it dips into the pelvis • Superior: The Fallopian tubes. • Medial: The uterus and the ovarian ligament
  14. 14. 2- The fallopian tubes or uterine tubes: • Open pass way extended from the cornua of the uterus towards the sidewalls of the pelvis.each tube is 10cm in long * Parts of the tube: • Interstitial portion: is 1 cm long and lies within the wall of the uterus. Its lumen is 1 mm wide. • The isthmus: is narrow part, which extends for 2 cm from the uterus. • The ampulla: is the wider portion of the tube where fertilization usually occurs. It is 5 cm long. The infundibulum: is 2 cm long is the funnel- shaped fringed end which is composed of fimbriae. One fimbria is elongated to form the ovarian fimbria which is attached to the ovary
  15. 15. Functions: 1-Receives the spermatozoa as they travel upwards 2- provides a site for fertilization. 3-Ovum transport and pick up. 4-Embryo transport and nourishment. • Relations: • Anterior and posterior. The peritoneal cavity and the intestines . • Lateral. The sidewalls of the pelvis . • Inferior. The broad ligaments and ovaries lie below the tubes. • Medial. The uterus lies between the two fallopian tubes.
  16. 16. • Supports: • The fallopian tubes are held in place by their attachment to the uterus. The peritoneum folds over them, draping down below as the broad ligaments and extending at the sides to form the infunibulopelvic ligaments. • The peristaltic movement of the fallopian tube is due to the action of the smooth muscles. The tube is covered with peritoneum but the infundibulum passes through it to open into the peritoneal cavity.
  17. 17. 3-The uterus • It is a hollow, muscular, pear –shaped organ in non- pregnant woman,it is 7.5 cm long , 5cm wide and 2.5cm in depth, each wall being 1.25 cm thick. • Function: shelter the fetus during pregnancy. It prepares for this possibility each month and following pregnancy it expels the uterine contents. • Location: situated in the true pelvis, between the bladder and rectum.( In pelvic cavity). *parts of the uterus: The uterus consists of the following parts: 1-The body or corpus makes up the upper two thirds of the uterus and is the greater part.
  18. 18. 2-The fundus is the domed upper wall between the insertion of the fallopian tubes. 3-The cronua are the upper outer angles of the uterus where the fallopian tubes join. 4-The cavity is a potential space between the anterior and posterior walls. It is triangular in shape, the base of the triangle being upper most. 5-The isthmus is a narrow area between the cavity and the cervix, which is 7 mm long. It enlarges during pregnancy to form the lower uterine segment. 6-The cervix or neck: the cervix forms the lower third of the uterus and measures 2.5cm in each direction. It is narrow lower part of the uterus composed of fibrous connective tissue, projects into the vagina & is divided into two portions :
  19. 19. a-vaginal portion : Below the attachment site that protrudes into the vagina. b- Supra vaginal portion : Above the site of attachment of the cervix to the vaginal wall. . The internal os: (mouth) is the narrow opening between the isthmus and the cervix. . The external os: is a small round opening at the lower end of the cervix. After childbirth this becomes a transverse slit. The cervical canal: is a continuation of the uterine cavity, lies between the internal & the external os, and is narrow at each end &wider in the middle
  20. 20. • Layers of the uterus: The uterus has three layers: • The perimetrium: (the outer layer, serous coat) double membrane drape over the uterus, an extension of the peritoneum covering all but narrow on either side . • The myometrium: (muscle coat) ,the muscular myometrium forms the main bulk of the uterus and comprises smooth muscle fibres intermingling with areolar tissue, blood vessels, nerves and lymphatics which is thick in the upper part of the uterus and is more sparse in the isthmus and cervix. The endometrium: (mucous membrane) The endometrial layer is covered by a single layer of columnar epithelium. This epithelium is mostly lost due to the effects of pregnancy and menstruation. The endometrium undergoes cyclical changes during menstruation and varies in thickness between 1 and 5mm
  21. 21. • The uterus is supported by the pelvic floor and maintained in position by several ligaments which are: • Pubocervical ligaments: pass from the cervix under the bladder to the pubic bones. • Transverse cervical ligaments (cardinal ligaments) from the sides of the cervix to the side walls of the pelvis. • Utero sacral ligaments run from the cervix to the sacrum. In the erect position they are almost vertical in direction and support the cervix. • Broad ligaments: fold of peritoneum which are draped over the fallopian tubes and spread from side of the uterus to the side wall of the pelvis. Supports
  22. 22. • Round ligaments: fibro muscular coat from upper, outer angles of uterus, through inguinal canal, terminating in labia majora. • The ovarian ligaments: also begin at the cornea of the uterus but behind the fallopian tubes and pass down between the folds of the broad ligament to the ovaries. • Relations • Superior. Above the uterus lie the intestines. • Inferior. Below the uterus is the vagina. • Lateral. On either side of the uterus are the broad ligaments, the fallopian tubes and the ovaries. • Anterior: In front of the uterus lie the uterovesical pouch and the bladder. • Posterior: Behind the uterus are the recto uterine pouch of Douglas and the rectum.
  23. 23. 4- Vagina: passage as musculomembranous canal situated in front of the rectum and behind the bladder, passing upwards and backwards into the pelvis along a line approximately parallel to the plane of the pelvic brim. • Structure: The posterior wall is 10 cm long while the anterior wall is only 7.5 cm in length because the cervix projects at a right angle into its upper part. The vaginal walls stretch during intercourse and child birth due to transverse folds as rugae. In the nulliparous adult the vagina is H- shaped in section. • Functions: 1- Allows the escape of the menstruation and act as excretory duct for uterine secretion 2- Receives semen from the male during sexual intercourse 3-provides an exit for the fetus during delivery.
  24. 24. • Contents: • The vagina has an acidic environment, which protects it against ascending infections the fluid is strongly acid (pH 4.5) . • Layers: • The lining is made of squamous epithelium. Beneath the epithelium lies a layer of vascular connective tissues. • Relations: • Superior. Above the vagina lies the uterus. • Inferior. Below the vagina lie the external genitalia. • Lateral: Beside the upper two-thirds are the pelvic fascia and the ureters, which pass beside the cervix. • Anterior. Vaginal wall is related to bladder and urethra. • Posterior. Behind, the pouch of Douglas, the rectum and the perineal body.

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