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Answer for the clue "Neuron appendage ", 4 letters:
axon

Alternative clues for the word axon

Word definitions for axon in dictionaries

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"axis of the vertebrate body," 1842, from Greek axon "axis" (see axis ).

Wiktionary Word definitions in Wiktionary
n. (context cytology English) A nerve fibre which is a long slender projection of a nerve cell, and which conducts nerve impulses away from the body of the cell to a synapse.

Usage examples of axon.

It is the axon that is the nerve fiber in the typical nerve, and such a fiber, although microscopically thin, is sometimes several feet long, which is unusual, considering that it is part of a single cell.

However, in the living system it happens that the nerve impulse in the dendrites virtually always travels toward the cell body, whereas in the axon it travels away from the cell body.

For one thing, the rate at which a nerve impulse travels along an axon varies roughly with the width of the axon.

And yet why should invertebrates outpace vertebrates in axon thickness when the vertebrates have the more highly developed nervous system?

The axon is like a thin line running down the axis of the interrupted cylinder formed by the myelin sheath.

The axon stretches so far from the cell body that it seems quite reasonable to assume it can no longer maintain active communication throughout its length with the cell nucleus and the nucleus is vital to cellular activity and integrity.

The acetylcholine liberated at the axon endings of one nerve will affect the dendrites, or even the cell body itself, across the synapse and initiate a new nerve impulse there.

The axon of a neuron may make a junction not only with another neuron but also with some organ to which it carries its impulse, usually a muscle.

Again there is no direct fusion between the axon and the muscle fibers.

An axon which has degenerated through injury or disease can sometimes be regenerated, provided its neurilemma has remained intact.

The axon of this second cell leads outward by way of an appropriate peripheral nerve to the muscle, gland, or other organ that is to give the response.

The diagram shows only the conducting portion of the axon, or axis cylinder.

The axis cylinder, however, is the only part of the axon concerned in the transmission.

A neuron consists of a soma, which is its central cell body, and an axon and dendrites.

The axon and dendrites are thin branching tubes that form tree-like structures coming out of the soma.