Chapter 1 Flashcards
1
Q
How are the three germ layers formed? (what process)
A
through gastrulation
2
Q
what happens at 50% epiboly?
A
gastrulation
3
Q
where do neural crest cells develop?
A
between the neural tube and the ectoderm
4
Q
ectoderm prior to gastrulation forms what?
A
epidermis
5
Q
ectoderm after/during gastrulation forms what?
A
Neurons
6
Q
what does activin signaling normally do?
A
inhibits neuronal induction
7
Q
what type of receptor is activin?
A
TGF-B
8
Q
what is Noggin?
A
binds activin ligand, thus inhibiting activin signaling and causing default neuronal formation
9
Q
name the molecular neuronal inducers
A
noggin, chordin, folistatin
