Neurite

The term neurite can be used in the German language for different terms being included in each case, the efferent cell process of a neuron in the term scope.

The term neurite underlying summarizes the single extension of a neuron with which it can forward a thrill from the cell body away ( efferent ) to selected cells, whether these nerve cell process runs in a wrapper or not. By glial cells in the enclosure is also termed an axon or axon cylinder axis; Axon plus Gliahülle together form a nerve fiber. An axon is myelinated Siert called when this shell is designed as a myelin sheath, as in myelinated nerve fibers. Since the vast majority of axons are wrapped in the course of glia, the names axon and axon can be used almost interchangeably.

The axon is at the origin cone ( axon hillock ) emerge from the perikaryon called the cell body ( soma) of a neuron, may make side branches as collaterals and with a Endbäumchen ( telodendron ) aufzweigen in several presynaptic endings. In addition to neurite occur in multipolar, bipolar and pseudounipolar neurons in cell processes that are distinguished as dendrites.

In bipolar neurons which two projections can also be referred to as dendritic and axonal neuritisches axon. In pseudounipolar nerve cells, the term neurite is often more broadly for both ( similarly constructed and gliaumhüllt running ) extensions or spurs used; these in the neurons of the sensory cranial nerve and dorsal root ganglia and peripheral or central axon often be called. The dendritic bipolar nerve cell corresponding - - In this case, the peripheral foothills is sometimes considerably longer than the central axon.

Furthermore, neurite sprouting is also available for extensions of developing neurons in the neuroepithelium or hair-like cell processes of neurons in cell culture. These extensions can differentiate later, or be re-formed. In this sense, the designation of neurite occasionally be construed as an umbrella term for nerve cell processes.

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