Psychology_Study_Guide_Test_One - • Cell is polarized...

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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...

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