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Embryology > First Week > Flashcards

First Week Flashcards

1
Q

Contraceptives that prevent sperm from reaching egg?

A

Barrier contraceptives

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2
Q

Contraceptives that are medicines and deviciles

A

Antiovulatory
The pill blocks FSH and LH surges
Plan B must be used before implantation

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3
Q

Copper or endocrine

A

IUDs
Intrauterine devices
Inhibit movements or attachments of sperm with egg

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4
Q

Emergency contraception

A

Copper IUD, levonorgestrel (Plan B), mifepristone, misoprostol (RU-486 Pill), and Yuzpe Method

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5
Q

What is the most common cause of infertility?

A

Occluded uterine tubes

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6
Q

How do you overcome blockage of oviduct (ART)?

A

In vitro fertilization

Embryo transfer

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7
Q

How do you overcome a too hard of a zona pellucida?

A

Assisted hathing

Intracytoplasmic sperm injection

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8
Q

How do you overcome poor sperm mobility?

A

Gamete intrafallopian transfer

Zygote intrafallopian transfer

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9
Q

The zygote divides and forms what and when?

A

Morula (mulberry) by day 3

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10
Q

What does the inner cell mass do? (1 thing)

This is part of the blastocyst

A

Forms embryo

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11
Q

What is the role of the trophoblast? (2 things)

Part of the blastocyst

A

Forms fetal membranes and placenta

Secretes early pregnancy factor

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12
Q

What do you call the cells that make up the inner cell mass?

A

Embryonic stem cells

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13
Q

The blastocyst must break away from what to implant?

A

Zona pellucida

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14
Q

The maternal pronucleus is more important in the development of what?

A

Embryo

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15
Q

The paternal pronucleus is more important in the development of what?

A

Extraembryonic tissue

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16
Q

Where does fertilization usually take place?

A

Fallopian/uterine tubes

17
Q

The trophoblastic projections of the blastocyst want to take root where?

A

Endometrium of uterus

18
Q

Where does implantation occur?

A

Uterus

19
Q

The uterus is in secretory phase which is maintained by progesterone and estrogen from where?

A

Corpus luteum

20
Q

What percent of blastocysts fail to implant properly?

A

50%

21
Q

What percentage of couples have infertility issues?

A

15-30%

22
Q

Spontaneous abortion is common if zygote chromosomal abnormalities are present. Therefore, what is the rate of major birth defects of live births?

A

2-3%

23
Q

Ectopic pregnancies occur in what % of all pregnancies?

A

2%

24
Q

Ectopic pregnancies account fo what % of all pregnancy related maternal deaths?

A

9%

25
Q

Implantation usually occurs how many days after fertilization?

A

5.5-6 days

Embryology (6 decks)

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