anterior horn

(redirected from Anterior horn cell)
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  • noun

Synonyms for anterior horn

one of two the two roots of a spinal nerve that passes ventrally from the spinal cord and that consists of motor fibers

References in periodicals archive ?
When impulses reach the anterior horn cell, an impulse is sometimes fired back toward the periphery, forming the F-wave.
However, the association with limb weakness of a motor neuron or anterior horn cell type, presence of an elevated hemidiaphragm on chest radiograph, and a restrictive pattern of respiratory failure by pulmonary function testing suggest a central, poliomyelitislike etiology for respiratory failure in all other patients.
Electrodiagnostic studies of all patients displayed markedly reduced compound motor axon potentials with preserved sensory nerve action potentials; the results were interpreted as consistent with a process primarily localized to the motor axons or, far more likely, given the clinical scenario and pathologic data from WNV-infected animals, the anterior horn cells of the spinal cord.
In seven cases, the evaluation suggested involvement of spinal cord gray matter--specifically anterior horn cells.
Although muscle denervation and reduced CMAP amplitudes do not distinguish loss of anterior horn cells from loss of motor axons (15), these patients' clinical features can be explained only by anterior horn cell disease, since no known infectious processes limited to motor axons produce widespread, asymmetric paralysis without sensory involvement.
The presenting symptoms of this case, with asymmetric paralysis, and the histologic findings of neuronophagia of motor nuclei in the anterior horn cells are similar to disease caused by the 3 poliovirus serotypes.
In terms of the lower motor neurons, ALS affects the anterior horn cells of the spinal cord, leading to limb weakness.
Spinal muscular atrophy (SMA) is a genetic, motor neuron disease characterized by wasting of the skeletal muscles caused by progressive degeneration of the anterior horn cells of the spinal cord.
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