____ occurs as a surviving axon grows a new branch to replace the synapses left vacant by a damaged axon.
A) Collateral sprouting
B) Degeneration supersensitivity
C) Denervation supersensitivity
D) Axon sprouting

Question

Quizplus · Accepted Answer

Collateral sprouting is the process by which a surviving axon grows new branches to replace the synapses left vacant by a damaged axon. This occurs in response to injury or damage to the nervous system, and allows for the recovery of lost function. Degeneration supersensitivity and denervation supersensitivity are related processes, but refer to changes in the postsynaptic neuron that occur in response to the loss of input from damaged axons. Axon sprouting is a more general term that can refer to the growth of new axons in a variety of contexts, including during development or in response to injury. However, in the context of replacing lost synapses, collateral sprouting is the most specific and accurate term.

____ Occurs as a Surviving Axon Grows a New Branch