Neurotransmitters

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Author:
DesLee26
ID:
208330
Filename:
Neurotransmitters
Updated:
2013-03-19 17:07:50
Tags:
BIO 220
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Description:
Ballough
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  1. acetylcholine
    • most abundant neurotransmitter in teh entire body, but its extremely important in the PNS¬†
    • In the brain, it accounts for < 5% NT in the brain; but, in the brain, its the second most important for learning and memory
    • Disease that has lack of this: Alzheimer's Disease
  2. glutamate
    • most abundant excitatory NT in brain
    • 1st most important for learning and memory¬†
    • 35% presence at all chemical synapses
  3. GABA
    • most abundant inhibitory NT in brain; present at about 50% of all synapses (100 billion neurons--> 100 trillion synapses in brain
    • Anesthesias work by stimulationg GABA receptor at synapses
  4. dopamine
    • NT necessary for planning movement in brain; maybe 1% NT;
    • if you don't have it: Parkinson's Disease
    • critical for all motivation
    • NT mimicked by all addictive substances
    • all addictions require an elevation in dopamine
    • love elevates dopamine level
  5. Serotonin
    • suppresses anxiety and fear of hte amydala
    • hunger in hypothalamus
    • antidepressents elevate serotonin
  6. nor-epinephrine/ nor- adrenaline
    NT that initiates fight-or-flight; increases awareness; mimicked yb aderol, amphetamines
  7. Which will produce EPSPs (ways of causing excitement)?
    Those EPSPs are __.
    • acetylcholine
    • glutamate
    • depolarizing
  8. What produces IPSPs?
    • GABA
    • hyperpolarizing

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