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Animal Physiology, Reproduction and developement > Organogenesis > Flashcards

Flashcards in Organogenesis Deck (10)
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1

summarise organogenesis

Formation of organs and organ systems, involves the localised shape changes of tissues and individual cells

2

What is neuralation?

Refers to the folding process in vertebrate embryos, which includes the transformation of the neural plate into the neural tube

3

What forms first in frogs and other chordates?

The neural tube and notochord

4

How does the neural plate form?

Forms in response to a number of signalling molecules secreted by mesoderm tissues

5

How does the notochord form?

Forms from dorsal mesoderm that condenses when cells associate tightly as a group just above the archenteron

6

How does the neural tube form and what does it become?

Neural plate curls inwards, rolling into a tube. It becomes the animals CNS

7

What is the neural crest?

Develops in vertebrate embryos, develops along border where neural tube pinch off from ectoderm

8

What do neural crest cells do?

Migrate to various parts of the embryo and form peripheral nerves, teeth, skull bones etc.

9

What happens to strips of mesoderm lateral to the notochord form?

Separate into blocks called somites.

10

What are somites?

Division of the body of an animal or embryo