PSYC 2240 Lecture 4: Lecture 4 notes!!
16 Feb 2012
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Video- robort sapolsky why does zebra get houses? . Cns is brain and spinal cord and pns is everything else. Ridged barrier that protects our brain, underneath our skull the bone. In psychology we are mainly looking at the brain and spinal cord part, underneath there is a layer called the dura mater (thick membrane that covers the cortex). Cerebral spinal fluid acts like a shock absorber since the brain is very soft like jello. Three layer- dura mater, arachnoid and pla mater covering the cortex all of this is in fluid which goes in spinal cord. In open head surgery the skull is taken out its like a bowl. If the bone is cracked or smashed they put a silver plate in which your skin grows over it, very strange feeling very mushy. Outer part of the spinal cord, white matter- because its covered by the myelin sheath (which is a lot of fat layers that is white).
