23, 24 - Embryogenesis 1

Question 1

Do you know these?

Embryogenesis

Answer 1

fucking learn it dumbass

Question 2

What are primordial germ cells? How and when are they differentiated?

Answer 2

Question 3

Give a broad overview of the definition of fertilization.

Answer 3

Question 4

How is sperm transported in the male reproductive tract?

Answer 4

Question 5

Where does fertilization usually occur?

Answer 5

Question 6

How does sperm travel to the oocyte? Through which anatomical structures? At what time is most optimal?

Answer 6

Capacitation is necessary for IVF

Question 7

Give a specific overview of the process of ovulation.

Answer 7

Question 8

Give a specific overview of the mechanism of fertilization and how a fertilized oocyte becomes a diploid zygote.

Answer 8

Question 9

What happens when 2 sperm enter the oocyte? How would that process occur? What is that process called?

Answer 9

Name of process: Polyspermy
How it happens: faulty cortical granule release
What happens? Polyspermy results in polyploidy
Some hallmarks:
-honycomb/snowstorm appearance on ultrasound
-very increased hCG

triploid hydatidiform moles (partial moles) has fetal parts in imaging

Question 10

Describe the process of cleavage in the first week of embryogenesis.

Answer 10

Question 11

What happens if there is splitting during cleavage?

Answer 11

Question 12

Describe blastocyst formation and the structure of the blastocyst.

Answer 12

Question 13

Describe the process of blastocyst implantation in the uterine wall.

Answer 13

Question 14

What is an ectopic pregnancy? What are the consequences of this?

Answer 14

Question 15

Why is the implanted blastocyst not cleared from the uterine wall during menstruation?

Answer 15

Question 16

What is a way to remember hallmarks of the second week of embryogenesis?

Answer 16

The week of 2’s: differentiation of the trophoblast into 2 (sycytiotrophoblast and cytotrophoblast), differentiation of the embryoblast into 2 (epiblast and hypoblast and the bilaminar disk), formation of the amnion from the epiblast and formation of the yolk sac from the hypoblast

Question 17

Describe the differentiation of the trophoblast in the second week of embryogenesis.

Answer 17

assists in further implantation

Question 18

Describe the differentiation of the embryoblast during the second week of embryogenesis.

Answer 18

the bilaminar disk is formed in this process

Question 19

How is nutrition supplied to the embryo in the second week of embryogenesis?

Answer 19

Question 20

How is the chorion devloped in the second week of embryogenesis?

Answer 20

includes extrembryonic mesoderm, cytotrophoblast, and syncytiotrophoblast

Question 21

What is the function of the early embryonic membrances and sacs?

Answer 21

second week of embryogenesis

Question 22

What does the embryo look like at the end of the second week of embryogenesis?

Answer 22

Question 23

What happens to the bilaminar disk during the third week of embryogenesis?

Answer 23

primitive streak is most important

Question 24

How is left-right orientation determined in the third week of embryogenesis?

Answer 24

left right dynein and kinesin is very important in cilia function here

Question 25

What are diseases associated with left-right asymmetry?

Answer 25

Question 26

Describe the process of gastrulation in the third week of embryogenesis. What does it form?

Answer 26

Question 27

Describe the formation of the notochord in the third week of embryogenesis. What is it made of?

Answer 27

Question 28

Describe the process of neurulation in the third week of embryogenesis. What tissue is involved?

Answer 28

Question 29

How are the neural folds fused during the third week of embryogenesis?

Answer 29

like a zipper going to both the cranial and caudal ends, this forms the brain and spinal cord eventually

Question 30

What happens when there are defects in the closure of the posterior neuropore during the third week of embryogenesis?

Answer 30

Question 31

What happens when there ae defects in the closure of the anterior neuropore during the third week of emrbyogenesis?

Answer 31

Question 32

How is the mesoderm differentiated during the third week of embryogenesis?

Answer 32

Question 33

What are the subdivisions of the intraembryonic mesoderm? What do these subdivisions eventially differentiate into?

Answer 33

Question 34

What happens during the 4th week of embryogenesis?

Answer 34

embryonic folding

Question 35

Describe cranial-caudal folding in the 4th week of embryogenesis.

Answer 35

Question 36

Describe Lateral folding in the 4th week of embryogenesis.

Answer 36

Question 37

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Question 38

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Question 39

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Question 40

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Question 41

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Question 42

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Question 43

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Question 44

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Question 45

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