How does the ectoderm decide to become skin tissue?
inhibition of proteins from mesoderm (adjacent layer)
How does ectoderm decide to become neural tissue?
No inhibition of proteins from mesoderm (adjacent layer)
How are motor neurons recognized?
lower concentrations of sonic hedgehog protein
What determines the type of neurotransmitter?
combination of signals
Which neurotransmitter is produced when neurons are alone in a dish?
Which neurotransmitter is produced when neurons are with other cells?
How are neurotransmitters determined?
turning on and off of genes
Where are neurons initially produced?
central canal of neural tube
What mechanisms does proper neuron migration require?
recognition of proper path and ability to move long distances
What prevents proper migration?
alcohol, cocaine, radiation
What guide growth cones?
Which protein was first discovered in worms?