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26 Feb 2011
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Central Nervous system Sept 13, 2010
Brain and spinal cord
Peripheral nervous system
oAll other nerves that go top other places
Human brain is very similar in organization to rat/cat
Hindbrain –Brain Stem
General area that is the base of the brain
Cerebellum, medulla
Cerebellum
oIntegrates sensory and motor
oGives you balance, allows you to stand on two legs
Medulla
oResponsible for basic life processes
Heart beat, breathing = critical
Midbrain
Reticular formation
oInvolved in sleep cycles
oCircadian rhythm – puts us to sleep and wakes us up
oIf you get damage to this place you wont wake up = COMA
Forebrain
Huge!
Thalamus (underneath is the hypothalamus)
oRelay centre in humans
oConveys information from all parts of brain
oAll neural info from the body goes to the thalamus
Hypothalamus
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Document Summary

Sept 13, 2010: brain and spinal cord, peripheral nervous system, all other nerves that go top other places, human brain is very similar in organization to rat/cat. Hindbrain brain stem: general area that is the base of the brain, cerebellum, medulla, cerebellum, integrates sensory and motor, gives you balance, allows you to stand on two legs, medulla, responsible for basic life processes. Midbrain: reticular formation, involved in sleep cycles, circadian rhythm puts us to sleep and wakes us up, if you get damage to this place you won"t wake up = coma. Ontogeny recapitulates phylogeny : what an individual goes through in their ontogenical development is very similar to evolutionary processes, maclean"s theory www. notesolution. com, triune theory of the brain, human brain is really three brains in one. oldest reptilian brain: brain always needs to do basic things. paleo mamalian brain: limbic system, we"ve added emotions.

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