PSYC 2410 Chapter Notes - Chapter 9: Retinal Ganglion Cell, Nerve Growth Factor, Neural Groove
2 Apr 2016
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A zygote, a single cell formed by the amalgamation of an ovum and sperm, and divides into two daughter cells which continue to divide. 3 other things much occur as well: cells must differentiate: some must become muscle, some multipolar neurons etc, cells must make their way to appropriate sites and align themselves with the cells around them to form particular structures. Induction of the neural plate: cells must establish appropriate functional relations with other cells. Developing neurons accomplish these 3 things in 5 phases. 1: neural proliferation, migration and aggregation, axon growth and synapse formation, neuron death and synapse rearrangement. Capable of developing into any type of mature body cell. A fertilized egg is totipotent, but lose this after 4 days of embryotic development and begin to be specialized. Developing cells that can develop into many, but not all, classes of body cells. Eventually, new cells can develop into different cells of only one class.
