Psychology_Study_Guide_Test_One - Cell is polarized from...

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Psychology Study Guide Test One Chapter 1: 1. Confounding variables: what caused the change in recall. Must control the extraneous variable. 2. Control group: receives a set amount so we know what the base line is 3. Placebo group: Experimenting in the group with a different amount of the thing without their knowledge to see the adverse effects 4. Correlation does not imply causation Chapter 2: 1. The Neuron: - Brian, spinal cord, and nerves all made of neurons - Glial cells: provide nutrients for neuron, rid cells of waste material - Work like electrical circuits - Receive incoming messages from dendrites - Electrical impulses are carried down axons to connect to other dendrites - Neurons are covered by a myelin sheath that speeds up transmission and protects axon 2. How neurons work - Starts with resting potential Inside: negatively charged protein ions and positive potassium ions Outside: negative chloride ions and positive sodium ions
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Unformatted text preview: Cell is polarized from negative potential inside cell-When signal is received by d endrites Gates in cell wall open sodium chann els allow sodium to flow in Cells interior beco m es rapidly depolarized and positively charged To restore the resting state the sodium chann els quickly close a nd potassium chann el open Gradually sodium and potassium switch back to places inside the cells As the sodium and potassium channels are activated it triggers the release of the neurotransmitters into the synapse activating the next neuron 3. Neurotransmitters-Synaptic vessels: chemicals in packets at end of the neuron-Action potential in axon triggers release of the neurotransmitters into the synaptic cle ( spaces in between neurons )...
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Psychology_Study_Guide_Test_One - Cell is polarized from...

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