PSY 242 Chapter Notes - Chapter 9: Embryonic Stem Cell, Neural Plate, Neuroglia
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Kept in dark room tied to toilet; transferred to covered crib and straightjacket at night; beaten by father; only saw mother for a few minutes per day; no solid food; hardly spoken to. Did(cid:374)"t rea(cid:272)t to e(cid:454)tre(cid:373)e (cid:449)ar(cid:373) or (cid:272)old; sile(cid:374)t ta(cid:374)tru(cid:373)s; easil(cid:455) s(cid:272)ared; (cid:272)ould(cid:374)"t (cid:272)he(cid:449); (cid:272)ould o(cid:374)l(cid:455) speak short, poorly pronounced phrases. Sho(cid:449)s that e(cid:454)perie(cid:374)(cid:272)e pla(cid:455)ed (cid:373)ajor role i(cid:374) the pro(cid:272)esses of ge(cid:374)ie"s (cid:374)eurode(cid:448)elop(cid:373)e(cid:374)t. Begins with zygote (a single cell formed by amalgamation of an ovum and a sperm) which divides to form two daughter cells, which then divide many more times until mature organism is produced. Cells must differentiate (some become muscle cells, some become glial cells, etc. ) Cells must go to appropriate sites and align with other cells to form particular structures. Cells must establish appropriate functional relations with other cells. Induction of the neural plate: neural proliferation, migration and aggregation, axon growth and synapse formation, neuron death and synapse rearrangement.
