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20 Cards in this Set
- Front
- Back
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Vessels in umbilical cord |
1 vein 2 arteries |
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Umbilical vein function |
Transports oxygenated blood from placenta to baby |
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Umbilical arteries' function |
Return deoxygenated blood from the iliac arteries of the baby to the placenta for purification |
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Wharton's Jelly |
-Material that supports the cord -Myxomatous connective tissue |
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Umbilical cord "shape" |
-Arteries spiral with vein -Absent twists are associated with a poor pregnancy outcome |
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Umbilical vein diameter |
-Increases throughout gestation -Maximum diameter: 0.9cm at 30 weeks |
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Umbilical cord can be visualized at... |
8 weeks-term |
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Amnion/Amniotic membrane |
-covers cord -covers fetal surface of placenta |
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Normal cord insertions |
-center of placenta -umblicus
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Umbilical cord formation |
-5 weeks/ 7 menstrual weeks -When omphalomesenteric (yolk stalk) and allantoic ducts fuse |
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Umbilical vessel formation |
Urachus (outpouching of urinary bladder) projects into connecting stalk --->allantois
Allantoic vessels become umbilical vessels |
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Normal intestine herniation (time frame/location) |
Herniate into proximal umbilical cord at 7 weeks-10 weeks NORMAL |
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Umbilical cord insertion into baby |
-ventral abdominal wall -check for : abdominal wall defects such as omphalocele, gastroschisis, limb-body wall complex |
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Umbilical cord dimensions |
1-2 cm diameter 40-60cm length (long and common to wrap) |
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Course of umbilical arteries |
1)fetal internal iliac arteries 2)alongside fetal bladder 3) exit umblicus 4) helix throughout course of cord 5) branch along chorionic plate of placenta |
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Course of umbilical vein |
1) confluence of chorionic veins of placenta 2) course of cord 3) inserts at umblicus 4) joins LPV and courses through liver |
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Umbilical arteries become _ after birth |
-lateral ligaments of the bladder -superior vesical arteries |
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Umbilical vein becomes _ after birth |
round ligament of the liver |
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Mothers with gestational diabetes |
-larger umbilical cord -increased amounts of WJ |
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Ductus venosus |
-conduit between the portal system and the systemic veins -lies in groove between left lobe and caudate lobe -becomes ligamentum venosum |
