HSF - Lecture 10

Question 0

What is a morula?

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Question 1

Differentiate between a morula and a blastocyst

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Question 2

Describe the oviduct

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Question 3

Where does fertilisation occur?

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Question 4

Differentiate between the blastocyst and the blastocoele

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Question 5

Describe the asymmetry of the blastocyst.

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Question 6

Describe the fate of the different cells in the blastocyst

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Question 7

What is the trophoblast?

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Question 8

At what stage does the ball of cells implant in the uterus?

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Question 9

What are germ layers?

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Question 10

What is the name of the process of formation of the three germ layers?

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Question 11

What does the inner cell mass that differentiate into?

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Question 12

What is the fate of the epiblast?

What is the fate of the hypo blast?

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Question 13

What name is given to epiblast + hypoblast?

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Question 14

What is e name of the cavity formed within the epiblast?

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Amniotic cavity

Question 15

Compare the yolk sack of chickens and humans

Answer 15

In humans there is no yolk in the sack - evolution has done away with this energy source

Question 16

Describe where the primitive streak appears and when this happens

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Question 17

What is the different between the primitive streak and the primitive groove?

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Question 18

Describe the process of gastrulation in a human

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Question 19

What determines the fate of cells moving through the primitive streak?

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Question 20

What structures arise from ectoderm?

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Question 21

What structures arise from mesoderm?

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Question 22

What structures arise from endoderm?

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Question 23

What is the first structure to arise in the embryo?

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Question 24

Describe the process of neurulation

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Question 25

What is the difference between the primitive groove and the neural groove?

Answer 25

In exactly the same position, however the primitive streak arises much earlier in development. Primitive streak gives rise to the three germ layers Neural groove: gives rise to the neural tube

Question 26

Where do the neural crest cells come from?

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Question 27

Which germ layer gives rise to the neural tube and neural crest cells

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Question 28

What do neural crest cells go on to form?

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Question 29

Describe the role of HOX genes in development

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Question 30

From which germ layer do the pleura, pericardium and peritoneum arise?

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Question 31

What is the difference between the two terms mysenchyma and mesoderm?

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