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AP psychology unit 2 notes
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all the notes from unit 2 of AP psychology
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1.
Biological psychology
Answer: the scientific study of the links between biological (genetic, neural, hormonal) and the psychological processes.
2.
Neuron
Answer: a nerve cell; the basic building block of the nervous system
3.
Dendrites
Answer: a neurons bushy, branching extensions that receive messages and conduct impulses toward the cell body
4.
Axon
Answer: the neuron extension that passes messages through its branches to other neutrons or to muscles or glands
5.
Myelin sheath
Answer: a fatty tissue layer segmentally encasing the axons of some neurons
6.
Action potential
Answer: a neural impulse; a brief electrical charge that travels down an axon
7.
Refractory period
Answer: a period of inactivity after a neuron has fired
8.
threshold
Answer: the level of stimulation required to trigger a neural response
9.
Synapse
Answer: the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron
10.
Neurotransmitters
Answer: chemical messengers that cross the synaptic gaps between neurons.
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