Nervous System Development Flashcards
1
Q
Which germ layer forms the CNS and PNS?
A
Ectoderm
CNS from neural tube
2
Q
What is neurulation?
A
How the ectoderm gives rise to the nervous system
3
Q
Are pain neurons more dorsal or ventral?
A
Dorsal
4
Q
What does the French Flag problem demonstrate?
A
Positional information can be the same but is interpreted differently by different progenitor cells
5
Q
What does a grafted notochord induce?
A
Ectopic floorplate
6
Q
What does a grafted floorplate induce?
A
Ectopic motor neurons
7
Q
What role does sonic headgehog play in the development of the nervous system?
A
- Made in notochord and floorplate
* Acts as morphogen- low conc> motor neurons, high conc> floorplate
