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4 Cards in this Set
- Front
- Back
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in the news
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Different kinds of parent styles shape genetic risk for drug use
Usually effects on DNA is bad thing Association between genetic vulnerability (serotonin transporter short version) to youth substance abuse and supportive parenting 5HTT gene and depression-short version aggravates responses to stress increased prevalence of depression There was a significant increase in drug use in study population With highly uninvolved parents, the kids risk was 21% to abuse drugs in youth With high supportive, no real difference between risk/low risk genetic suspectability |
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flow in action potential
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Proteins: inside -
K+: diffusion: out electostatic: inside Na+ both inside Cl-: diffusion: inside, e.s outside |
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diagram
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Neurotransmitter brings change in voltage to reach threshold potential
1/2 open at the same time but Na+ opens faster and want to rush through K+ is just slower |
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process of action potential (diagram)
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1. Na+ channels open, Na+ begins to enter the cell
2 .K+channels open, K+ begins to leave cell 3. Na+ channels become refractory, no more Na+ enters cell 4. K+ continues to leave cell, causes membrane potential to return to resting level 5. K+ channels close, Na+ rest 6. extra k+ outside, diffuses away |
