Principles of Anatomy and Physiology 14e with Atlas of the Skeleton Set (14th Edition)

Published by Wiley
ISBN 10: 1-11877-456-6
ISBN 13: 978-1-11877-456-4

Chapter 12 - Nervous Tissue - Figure 12.25 - Page 429: 1

Answer

It is an example of spatial summation, produced by the added/ combined effect of portions (small volumes) of neurotransmitters released simultaneously by presynaptic neurons in different places (spaces) or positions.

Work Step by Step

If the result had been produced by several quick successive bursts of neurotransmitter from the same neuron, that would be a case of temporal summation.
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