Conception Flashcards

1
Q

Implantation occurs how many days after conception

A

6 days

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2
Q

the blastocyst is completely implanted in the endometrium how many days after fertilization

A

10-12

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3
Q

how long does the embryonic period last

A

3 to 8 weeks

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4
Q

Which organs are developing when the woman is expecting her next period

A

heart and central nervous system

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5
Q

How do we know a menstrual cycle is ovulatory

A

they are regular every month and some women have PMS

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6
Q

forms the fetal part of the placenta, extra embryonic fetal membrane that is made up of trophoblast and mesoderm

A

chorion

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7
Q

when does implantation bleeding occur

A

10-14 days after conception

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8
Q

HCG level of 1000 what stage of development is the embryo/fetus in

A

gestational sac about 4-5 weeks

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9
Q

an HCG level of 1000 to 7200 yolk sac is visible between what weeks

A

5 weeks

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10
Q

at 5-7 weeks a fetal pole is visible what would you expect the HCG level to be at this time

A

7200-10800

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11
Q

When is cardiac activity see on the U/S

A

at 6 weeks with an HCG greater than 10,800

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12
Q

we should only use ultrasound dating for birth date if the pregnancy is less than how many weeks and only if the u/s and LMP differ by

A

5 days or more

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