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Questions and Answers
Where is the initial location of the notochord in the developing embryo?
Where is the initial location of the notochord in the developing embryo?
- In the endodermal layer (correct)
- In the ectodermal layer
- In the extraembryonic mesodermal layer
- In the intraembryonic mesodermal layer
What best describes the function of the notochord?
What best describes the function of the notochord?
- To induce the closure of the anterior neuropore
- To directly form the neural crest cells
- To induce the closure of the posterior neuropore
- To trigger the ectodermal layer to thicken in a preferential way (correct)
Where does the notochord come to lie after detachment from the underlying endoderm?
Where does the notochord come to lie after detachment from the underlying endoderm?
- In the intraembryonic mesodermal layer (correct)
- In the ectodermal layer
- In the endodermal layer
- In the extraembryonic mesodermal layer
What is the origin of the notochord?
What is the origin of the notochord?
What is the notochord formed from?
What is the notochord formed from?
Flashcards
Initial notochord location
Initial notochord location
The notochord initially resides within this embryonic layer.
Function of the notochord
Function of the notochord
The notochord stimulates the ectoderm to thicken.
Final notochord location
Final notochord location
After detaching from the endoderm, it is located within this embryonic layer.
Origin of the notochord
Origin of the notochord
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Notochord formation
Notochord formation
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Study Notes
Notochord Development
- The initial location of the notochord in the developing embryo is between the ectoderm and the endoderm, in the dorsal region.
Notochord Function
- The notochord provides a flexible, rod-like structure that gives support and shape to the embryo.
- It also serves as an organizing center, inducing the formation of surrounding tissues.
Notochord Migration
- After detachment from the underlying endoderm, the notochord comes to lie between the neural tube and the dorsal mesoderm.
Notochord Origin and Formation
- The notochord originates from the dorsal, median region of the embryo.
- The notochord is formed from the mesodermal germ layer, specifically from the chordamesoderm.
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