Fig 27.10 ovaries The ovaries & uterus are held in place by ligaments in the pelvic cavity Female...
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Transcript of Fig 27.10 ovaries The ovaries & uterus are held in place by ligaments in the pelvic cavity Female...
Fig
27.10ovaries
The ovaries & uterus are held in place by ligaments in the pelvic cavity
Female reproductive system
• Ovaries– ligaments support and stabilize
• Uterine tubes• Uterus
– enclosed within broad ligament• Vagina• External genitalia
The Female Reproductive System
Homologies
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Development
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• Held in position by ovarian ligament and suspensory ligament
• Ovarian artery and vein enter at ovarian hilum
• Covered by tunica albuginea
The Ovaries
Ovary
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Ovary HistologyNice images also at Blue histology
You tube shotgun histology
• Ovarian cycle
• Occurs monthly in ovarian follicles
• Primordial follicles develop into primary follicles
• Theca granulose cells surround oocyte
– Release estrogens, estradiol
• Follicular fluid encourages growth of secondary follicles
• One mature Graffian follicle develops
• Primary oocyte undergoes meiosis producing secondary oocyte
• Ovulation
– Secondary oocyte surrounded by corona radiata released
Menstural Cycle
Fig
27.11
2-primary follicle 5-oocyte
Mature follicle
• Fimbriae• Infundibulum• Ampulla• Isthmus
Uterine (Fallopian) Tubes
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• Mechanical protection and nutritional support to developing embryo
• Bends anteriorly (anteflexion)
• Stabilized by broad, uterosacral, round, and lateral ligaments
Uterus
Compare cycles
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Menstrual Cycle
If fertilization does occur
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FYI
FYI
Sperm count range from
20 – 100 million sperm per cubic mL
Chorion - villi
Amnion
Chorionic gonadotropin
HCG
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FYI
FYI
FYI
772 in text book
FYI
FYI
FYI
Epidural shot
Amniocentesis and CVS
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