PS101 Lecture Notes - Polyphagia, Myelin, Orgasm

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11 Sep 2013
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Connects the rest of the body to the central nervous system via bundles of axons (nerves). Receives information from the outside world and sends it to muscles, organs, etc. Responsible for intake of sensations and sending them to cns. Increased heart rate, increase blood flow, dilation of pupils. Increased appetite because cortisol makes you crave carbs to gain energy for the next fight or flight moment. Peripheral nervoussystem (pns)central nervoussystem (cns)somaticnervoussystemautonomicnervous systemsympatheticnervoussystemparasympatheticnervoussystemspinal cordbraincommunication between neurons. 1: goes from the dentrite to the cell body. Protection from adjacent signals: to the axon terminal deposits the information on receiving neuron. The more axons and dendrites you have, the more complex learning connections have occurred. Synapse: cont"d: the axon doesn"t touch the receiving neuron. Electrical impulse that occurs that is created by a change in voltage that allow vesicle to open. synaptic: messages accepted if neurotransmitter fits receptor site.

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