Bios 4400 Neural Development Exam With
Complete Solutions!!
neuromeres - ANSWER regions of rostral part of the neural tube in which budding of
neural areas occurs (formed by 4 weeks)
8 phases of embryonic & fetal development - ANSWER mitosis/proliferation, migration,
differentiation, aggregation, synaptogenesis, neuron death, synapse rearrangement,
myelination
mitosis/proliferation - ANSWER creation of new cells
migration - ANSWER cells move to new locations
- deeper layers develop first, more superficial layers migrate through deeper layers
differentiation - ANSWER specialization of cell type
- begin as neuroblasts
- neurons differentiate first, then astrocytes & oligodendrocytes
aggregation - ANSWER cluster together w like cell types
synaptogenesis - ANSWER create new synapses
- growth cones navigate & probe environment
- locate target tissues via chemical attractants & repellants located on surface of guide
cells
neuron death - ANSWER "pruning" of unsuccessful nerve cells
Complete Solutions!!
neuromeres - ANSWER regions of rostral part of the neural tube in which budding of
neural areas occurs (formed by 4 weeks)
8 phases of embryonic & fetal development - ANSWER mitosis/proliferation, migration,
differentiation, aggregation, synaptogenesis, neuron death, synapse rearrangement,
myelination
mitosis/proliferation - ANSWER creation of new cells
migration - ANSWER cells move to new locations
- deeper layers develop first, more superficial layers migrate through deeper layers
differentiation - ANSWER specialization of cell type
- begin as neuroblasts
- neurons differentiate first, then astrocytes & oligodendrocytes
aggregation - ANSWER cluster together w like cell types
synaptogenesis - ANSWER create new synapses
- growth cones navigate & probe environment
- locate target tissues via chemical attractants & repellants located on surface of guide
cells
neuron death - ANSWER "pruning" of unsuccessful nerve cells
