Week 4 key terms Flashcards
What are neural plates? (2)
The space between the embryonic disc.
The primitive neural tissue which is the start of the nervous system
What are neural grooves?
Forms from the neural plate
The groove between the neural folds
What is the neural tube?
An embryonic structure with subdivisions that correspond to the future forebrain, midbrain and hindbrain
What is neurogenesis? (2)
Cell birth
Come in the form of stem cells that develop into neuroblasts that mature into neurons
What is cell migration?
Newly formed cells that move to the correct location in the nervous system
What is cell differentiation?
Maturing cells
Neural cells become different types of neurons
what kind of neurons do the cells become in the cell differentiation stage? (2)
interneuron
Pyramidal
What is cell maturation?
Dendrites and axon frowth
whT are the stages of the cell development in the womb? (7)
1- neurogenesis 2- cell migration 3- cell differentiation 4- cell maturation 5- formation of synapses 6- cell death and synaptic pruning 7- myelination
What is synaptogenesis?
Formation of synapses that continue to occur after birth
What is myelination? (2)
Forming myelin
Speeding the conduction if electric signals
What is synaptic pruning?
Synaptic connections that do not become part of a functional neural network are lost
What happens to synapses after synaptic pruning?
The rearrangement of synapses
What is eoigenetics’?
The study of davrirs that affect gene expression but do not make changes to the nucleotide sequence of the gene themselves
What is experience-driven neural activity?
Factors that affect the brain through the environment and experience e.g. Alcohol
