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60 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Ovulation happens |
Day 14 |
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Fertilization occurs |
24-36 hrs after ovulation (Around day 15-16) |
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Blastomere |
2 -4 cell stage in ampulla |
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Morula |
8 cell stage in isthmus Enters uterus 4 days after fertilization Around day 19 |
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Blastocyst |
Implants in endometrium 7 days after fertilization Around day 21 |
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Blastocyst |
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Trophoblastic cells make |
placenta and chorion |
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Inner cell mass makes |
Embryo Amnion Yolk sac Umbilical cord |
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With IUP hCG becomes delectable in bloodstream |
7-10 days after ovulation 3wks LMP |
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hCG |
Doubles every 48 hrs (2-3 days) |
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hCG |
Keeps corpus luteum alive |
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Qualitative hCG |
Urine yes or no |
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Quantitative hCG |
Blood test (numbers) |
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Most common assay for hCG |
3rd IRP |
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3rd IRP is equal to |
1st IRP |
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hCG plateaus around |
8-9 wks |
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Discriminatory zone for hCG |
1000-2000 mIU/mL - transvaginaly |
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High levels of hCG |
Incorrect dates GTD multiples |
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Low levels of hCG |
incorrect dates Ectopic Embrionic demise or abnormal IUP |
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Endoderm |
Lungs GI |
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Mesoderm |
Musculoskeletal Heart |
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Ectoderm |
Brain Skin |
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Embrionic period ends at |
10 wks |
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Fetal period begins |
11 wks |
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Implantation begins |
By 3rd wk LMP |
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First sonographic sign of a pregnancy |
Decidualized endometrium Not specific |
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First defenitive sign of an IUP |
Gestationa sac |
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Double sac sign |
Double decidual sig |
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Chorionic cavity |
Between chorion and amnion
Extraembryonic coelom |
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Fetal contribution to placenta |
Chorion frondosum -has villi |
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Maternal contribution to placenta |
Decidua basalis - implantation site |
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Chorion that does not have villi |
Chorion leave |
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Decidua capsularis |
Endo tissue surrounding blastocyst |
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Decidua parietalis/ vera |
Decidualized endo outer to capsularis |
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Double decidua sign |
Capsularis-inner Parietalis-outer |
Capar |
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Yolk sac |
Between membranes Chorionic cavity |
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First structure seen within gestational sac |
Secondary Yolk sac |
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When should the yolk sac be seen TV |
Around 5.5 wks MSD 8mm |
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When should the yolk sac seen TA |
7 wks MSD 20mm |
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Vitelline duct |
Yolk sac to embryo |
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Normal measurements of yolk sac |
Up to 6mm Inner to inner |
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When should a GS be seen TV |
hCG 1000-2000 mIU/mL More than 5wks if certain LMP |
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GS grows |
1mm per day |
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MSD formula |
Length+height+width /3 |
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How is GS measured |
3 measurements in 2 planes Inner to inner |
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How to get gestetional age from MSD |
MSD +30=GA in days |
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A MSD-CRL<=5mm |
High risk of abortion |
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How to calculate GA from CRL |
CRL+ 42=GA in days |
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Most accurate measurement for dating pregnancy sonographically |
CRL( head to bottom) |
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Embryo grows |
1mm per day same as GS |
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When should an embryo be seen TV |
MSD 16 mm |
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When should an embryo be seen TA |
MSD 25 mm |
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Vitelline duct AKA |
Omphalomesenteric duct |
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Vitelline duct |
Contains one vein one artery |
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Responsible for early hematopoesis |
Yolk sac |
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Fetal heart beating |
Around 6 wks |
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Physiologic bowel herniation |
8-12 wks |
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Rhombencephalpn |
8-11 wks normal |
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Amnion and chorion fuse by |
16 weeks |
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Chorionoc bump |
Resolving hematoma Assoc with preg loss slightly |
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