Answered: Let’s examine a neural pathway that…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 4TAHL: Assume presynaptic excitatory neuron A terminates on a postsynaptic cell near the axon hillock and...

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Let’s examine a neural pathway that involved three (3) neurons in sequence: one propagates an action potential from threshold stimulus of receptor to spinal cord; second propagates action potential superiorly to brain stem; and third propagates action potential from brain stem to part of cerebral cortex involved in perceiving the stimulus. Which of the following is correct classification of these neurons:

a. all three are presynaptic

b. first is presynaptic, other two are postsynaptic

c. first and second are presynaptic, third is postsynaptic

d. first and second are presynaptic, second and third are postsynaptic

e. all three are postsynaptic

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