Answered: Temporal summation of excitatory inputs…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Question

Temporal summation of excitatory inputs onto a neuron (we will refer to that neuron as Neuron A) refers to the... (Check all the following that can correctly complete this sentence)

a.) additive effect of simultaneous inputs from multiple neurons on to Neuron A

b.) ability of sequential inputs from one neuron to increase ion flux and voltage change in Neuron A

c.) increased likelihood of Neuron A reaching threshold and firing an action potential

d.) process of coordinating the timing of a movement

Expert Solution

Step 1

Temporal summation is a process by which the postsynaptic potential of a neuron is integrated over time, in response to successive action potentials arriving at a synapse. Specifically, it refers to the integration of multiple excitatory inputs from a presynaptic neuron, arriving at different times but at the same location, to produce a single postsynaptic potential.