PSY100H1 Chapter 3: Chapter 3 - Genetic and Biological Foundations
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PSY100H1 Full Course Notes
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Switched on : genes have instructions about when to produce rna determined by the environment, allows cells to differentiate to different tasks. Social and environmental contexts influence genetic expression: different genes may react differently to environmental factors such as abuse, genes influence how you react to environmental factors , which causes different responses from others www. notesolution. com. How does the nervous system operate: takes information from outside world, evaluates it, and produces behaviours to adapt to the environment, billions of nerve cells. Changes in electrical potential lead to action: excitatory signals stimulate the neuron to fire. Inhibitory and excitatory signals received by the dendrites are integrated within the neuron. If the neurotransmitter depolarizes the membrane, it is excitatory. Substance p in the brain, causing a burning sensation this depletes reserves of substance p, preventing the transmission of other pain messages. Grf neurons are connected to an area of the hypothalamus that is involved with sleep-wake cycles.
