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Motor neuron


Spinal cord motor neurons control voluntary movement by relaying messages that arrive from upper brain centres to the innervated muscles.
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Motor neurons
These transmit impulses from the central nervous system to the
muscles and
glands ...
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motor neuron: a type of neuron that transmits impulses from the brain and spinal cord to muscles or glands.
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motor neuron
A nerve cell that transmits signals from the brain or spinal cord to muscles or glands.
motor unit ...
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Motor neurons in this system do not reach their targets directly (as do those in the somatic system) but rather connect to a secondary motor neuron which in turn innervates the target organ.
Click here for a diagram of the Autonomic Nervous System.
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motor neuron A neuron that synapses with a muscle membrane.
motor unit A motor neuron and the muscle fibers associated with it.
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So the motor neurons that we study express some very specific genes. One gene is called Eyelet 2, and then other motor neurons express a related gene called Eyelet 1.
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On the other hand, specification of these same Gli2 independent cell types (V2 interneurons and motor neurons)"but not of floor plate cells"can be restored in Shh mutant embryos by the removal of Gli3 activity (Litingtung and Chiang 2000).
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Researchers at the University of Wisconsin-Madison coaxed human embryonic stem cells into becoming neural stem cells, then into the beginnings of motor neurons before finally differentiating into spinal motor neuron cells, the cell type that, ...
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Two examples are spinal motor neurons with dendritic arbors of a few millimetres in diameter, and retinal amacrine cells, with arbors of only few hundred micrometers in diameter.
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peripheral nervous system
The sensory and motor neurons that connect to the central nervous system.
peritoneum
The thin membrane of meosdermal origin that lines the body cavity, covers the heart, and forms mesenteries.
Covered in: ...
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PeripheralNS the distant part of the NS comprised of the sensory and motor neurons
(peri = around; pher = to bear carry) ...
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