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12 Cards in this Set
- Front
- Back
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Where does the paramesonephric duct arise from? What do the ducts become?
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ARISE from intermediate mesoderm.
DELEVOP INTO upper 2/3 of vagina, cervix, and uterus, and fallopian tubes |
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What hormone drives mesonephric duct development?
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Testosterone
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What hormone drives paramesonephric duct development?
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The ABSENCE of MIS/AMH (produced by sertoli cells)
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At 5-6 weeks, is embryo differentiated?
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NO.
Both ducts (para and meso) are present. |
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How do the sinovaginal bulbs form?
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When the uterovaginal primordium (from the fused ends of the paramesonephric ducts) joins the coelemic epithelium.
If sinovaginal bulbs do not form, this results in vaginal agenesis. |
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Where do fallopian tubes arise from?
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They arise from paramesonephrics...the unfused portion of the upper ducts.
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What do the sinovaginal bulbs form?
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When they fuse, they form the vaginal plate.
Central cells undergo apoptosis to form the vaginal lumen. |
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What are the TWO GENERAL CATEGORIES of mullerian abnormalities?
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Vertical and horizontal abnormalities
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What is a key characteristic of VERTICAL MULLERIAN ABNORMALITIES.
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Problems with connection of vertical structures
i.e. 1) transverse vaginal septum 2) Cervical agenesis/dysgenesis 3) Mullerian AGENESIS! 4) Imperforate hymen. ALL THINGS THAT WOULD PREVENT YOU FROM GOING UP. |
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What is a key characteristic in HORIZONTAL MULLERIAN ABNORMALITIES.
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Both side DO NOT come together evenly. There may be a longitudinal uterine septum. There may be
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Uterine didelphis has how many vaginas?
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TWO
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What is the difference between a bicornuate uterus and a septum uterus?
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Bicornuate is a heart-shaped uterus. The ducts have fused in the CAUDAL portion. However, the CRANIAL PART REMAINS UNFUSED. The uterus looks like a heart.
The SEPTUM uterus has fused completely, although tissue separates both sides. Can cause TOTAL COMPARTMENTALIZATION. |
