PSY 361 Chapter Notes - Chapter 6: Corpus Callosum, Myelin, Beaufort Scale
5 Nov 2016
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*central nervous system: includes the brain and spinal cord. At birth the brain is 1/3 1/4 the volume of an adult brain , by age 3 it reaches 90% of the adult weight . *brain stem: responsible for basic body functions ( breathing , heartbeat , body temp & sleep- wake cycles). *cerebrum: largest part of the brain , divided into l&r hemispheres , *lateralization : te(cid:374)de(cid:374)(cid:272)y of ea(cid:272)h of the (cid:271)rai(cid:374)"s he(cid:373)ispheres to have spe(cid:272)ialized functions . 4 lobes: occipital, parietal, temporal, frontal. Brain spurts occur from beginning of third trimester age 4. *neuron: nerve cells that send & receive information. https://www. google. com/search?q=brain+diagram&source=lnms&tbm=isch&sa=x&ved=0ahukewjstuqotjdqahwhx4mkhegrdzsq_auiccgb&biw=1333&bih=659. *integration: process by which neurons coordinate the activities of muscle groups. *differentiation: process by which cells acquire specialized structure & function . *cell death: normal elimination of excess cells to achieve efficient functioning . Only about half of the cells are needed. *myelination: process of coating neurons w/ myelin fatty substance that enables faster communication b/t cells.
