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Exam 1 - Bio

Intro to Psychology

QuestionAnswer
what is the sensory neuron's function? to carry messages in
what is the interneurons function? process information between the sensory input and motor output
what is the motor neurons function? to carry instructions out
what is the function of the dendrites? they recieve messages from other neurons
what is the function of the cell body? it is the cell's life support center
what is the function of the axon? it passes messages from the cell body to neurons, muscles, or glands
what is the function of the myelin sheath? speeds up messages
what is the function of terminal branches? releases/ sends messages to other neurons
what is resting potential? this is the resting membrane potential, normally at about -70 millivolts.
what is threshold? if the cell receives enough excitatory stimulation to reach threshold, this will fire
what is depolarization? when the membrane potential becomes more positive
what is action potential? this is the peak of the action potential.
what is repolarization? the sodium potassium pump works to get the cell back to the negative resting membrane potential
what is hyperpolarization? sometimes the sodium potassium pump overcompensates and hyperpolarizes the membrane potential, making it too negative.
what are neurotransmitters? chemical messengers that cross the synaptic gap
what are presynaptic terminals? where the neurotransmitters are released
what are vesicles? where neurotransmitters are released in the presynaptic terminals
what are receptors? membrane protein that is activated by a neurotransmitter.
what are postsynaptic terminals? specialized to receive the neurotransmitter signal released from the presynaptic terminal and tranduce it to electrical and biochemical changes
what are synapses? the place where neurons connect and communicate with each other
what's seratonin? mood
what's dopamine? pleasure
what's acetylcholine? learning
whats glumate? memory
what's GABA calming
Created by: anaelc
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