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Study Set 2

A&P: Nervous System

QuestionAnswer
What is an action potential? nerve impulses that fall or rise in voltage across a cellular membrane
Define membrane potential it is described as the difference in electrical potential that occurs between the inside and outside of a cell
Define Spatial summation Occurs when potentials from different presynaptic neurons causes the post-synaptic neurons to reach its threshold
Define temporal summation Occurs when a synapse is stimulated a second time before the effect of the first stimulus has ended
What are the four main chemical classes of neurotransmitter? Amino acids, monoamines, peptides, and purines
What is saltatory conduction? A type of conduction in which the nerve impulses occurs within the myelinated fibers, where an impulse skips from one node to the next
What is a neurotransmitter? known as chemical messengers that sends messages from one neuron to the next target cell
What are examples of amino acids? glutamate, glycine, GABA, aspartate
What are examples of monoamines? dopamine, norepinephrine, serotonin
What are examples of peptides? Melanocyte-stimulating hormone, adrenocorticotropin, somatostatin, opioids
What are examples of purines? adenosine triphosphate (ATP), ADP, AMP
Created by: lydiar0815
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