Gross Anatomy of the Female Reproductive System
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Transcript of Gross Anatomy of the Female Reproductive System
1. To know the different parts of the female reproductive system, as compared to the male counterpart2. To understand the relations of these organs to neighboring structures4. To enumerate the common clinical conditions of these organs as to its embryology, anatomy and histology5. To know the recent technology used in its study
OBJECTIVES
Broad Ligament
• Fold of peritoneum that encloses uterus
• Extends from side of uterus to lateral pelvic wall and floor
• Uterine tubes found in free edge
Ovaries• Ovarian surface• Ovarian fossa
– Boundaries: iliac vessels
• 1.5 x 0.75 “
• Ligaments
- Broad (mesovarium)
- suspensory
- round
Superiorend
Inferiorend
Blood supply:•Arteries – Ovarian (L2)•Veins – Ovarian (IVC & Renal)Lymph drainage:•para-aortic nodes (L1)Nerve supply:*aortic plexus
Clinical Notes:1.Position2.Cysts
- benign- malignant
Technology: 1.Ultrasound2.Laparoscopy3.In vitro fertilization
* Genital ridge
Uterine Tubes
• 10-12 cm long• Functions
– carry oocytes from ovaries
– carry sperms from uterus to ampulla
– conveys dividing zygote to uterus
Uterine Tube
• Infundibulum– abdominal ostium– 20 to 30 fimbriae
• Ampulla– widest & longest
• Isthmus– narrowest part
• Intramural - interstitial
Blood supply:•Arteries – Ovarian
Uterine•Veins – Lymph drainage: - internal iliac / para-aorticNerve supply: - Autonomics of the inferior hypogastric plexus
Clinical Notes:1.PID2. Ectopic pregnancy
Technology:1.Tubal ligation2.In vitro fertilization3.Laparoscopy – chromotubation
* Paramesonephric ducts
Uterus
• Located between bladder and rectum
• Anterior – bladder• Posterior – rectum• Lateral – adnexae
Vesicouterinepouch
Rectouterinepouch
Uterus
• Two main portions– body - superior two
thirds– cervix - inferior third
• Isthmus– junction between the
body and cervix
• Fundus• Cornua
- Functions: reception, retention, nutrition
- pear-shaped- 3 x 2 x 1”- triangular cavity - thick muscular wall
- Arteries & Veins: uterine- Lymph drainage: * Fundus – para-aortic nodes * Body & cervix – int & ext. iliac; superficial inguinal nodes * Nerve supply – as the tubes
Uterine Support
• Pelvic Diaphragm– levator ani muscles– coccygeus
• Urogenital diaphragm• Cardinal ligament• Uterosacral ligament• Pubocervical ligament
LEVATORANI
UG DIAPH
FASCIA
< OBT. INT.
< PERINEAL BODY
Clinical Correlations:1.Uterus at different ages 2.Pregnancy & labor
Cesarean section3. Pelvic examination4. Conditions:
* Prolapse / Procidentia* Leiomyoma* Malignancy * Embryological
Blood Supply of Female Reproductive Tract
• Vagina– vaginal artery– internal pudendal a.
• Uterus– uterine artery– ovarian artery
• Ovary– ovarian artery
• Uterine tubes– uterine & ovarian a.
Vaginal a.
Internal pudendal a.
Uterine a.
Ovarian a.
Blood Supply to FemaleReproductive Organs
• Anastomoses of venous plexuses– vaginal– uterine– rectal– pampiniform
• Venous drainage– internal iliac veins– ovarian vein
• right - inferior vena cava• left- left renal vein
Lymphatic Drainage
• External iliac nodes– 8-10 in number– drain bladder, male internal
organs, uterus
• Internal iliac nodes– from all pelvic viscera– deep part of perineum
• Sacral lymph nodes– from posterior pelvic wall,
rectum, prostate/cervixExternaliliac nodes
Internaliliac nodes
Commoniliac nodes
Lumbarnodes
Sacral nodes
Cisterna chyli
Lumbar trunk
Lymphatic Drainage
• Common iliac nodes– lateral group
• common iliac vessels• lymph from external &
internal nodes– median group
• angle between vessels• lymph directly from
pelvic viscera
• Lumbar aortic nodes– along abdominal aorta– lymph from common iliac
nodes , fundus of uterus, ovary & tubes
Externaliliac nodes
Internaliliac nodes
Commoniliac nodes
Lumbarnodes
Sacral nodes
Cisterna chyli
Lumbar trunk
Lymphatic Drainage
Externaliliac nodes
Internaliliac nodes
Commoniliac nodes
Lumbarnodes
Sacral nodes
Cisterna chyli
Lumbar trunk
Lumbar aortic nodes
Lumbar trunk
Cisterna Chyli
Thoracic duct
Pelvic Autonomic System
• Superior hypogastric plexus– anterior to bifurcation of
aorta– inferior prolongation of
intermesenteric plexus
• R&L hypogastric nerves– mingle with pelvic
splanchnic ncerves
Pelvic Autonomic System
• Inferior hypogastric plexus– superior hypogastric
plexus and pelvic splanchnic nerves
– surrounds internal iliac artery
• Pelvic plexus
Pelvic Plexus
• Middle rectal plexus– innervates rectum
• Vesical plexus– innervates urinary
bladder
• Prostatic plexus– innervates male
internal reproductive organs
• Uterovaginal plexus
Dissection• Identify structures that enter and leave
the pelvis (ureter, internal iliac artery & branches)
• Examine the peritoneal relationships in both male and female pelves– Note the formation of the pouches
• rectovesical• rectouterine• vesicouterine
Vesico-uterinepouch
Recto-uterinepouch
Rectovesicalpouch
Dissection
– Identify all the different ligaments of each individual pelvis that can be visualized
• posterior surface of anterior abdominal wall• females
– uterosacral and cardinal ligaments– broad , round, suspensory ligament
Dissection
• Remove the peritoneum from the pelvic cavity and inspect the pelvic viscera – Pull the apex of the bladder upward and backward to easily
detach the bladder from the pelvic wall exposing the retropubic space
• With a bone saw cut through the symphysis pubis and retract it laterally
• Cut through the midline of the bladder (Sagittal section) Inspect bladder wall