| 释义 |
sensory neuron
sen′sory neu`ron (or nerve`),
n. a nerve cell that conducts impulses from the periphery of the body to the central nervous system. Thesaurus| Noun | 1. |  sensory neuron - a neuron conducting impulses inwards to the brain or spinal cordafferent neuronnerve cell, neuron - a cell that is specialized to conduct nerve impulsesafferent, afferent nerve, sensory nerve - a nerve that passes impulses from receptors toward or to the central nervous system |
sensory neuron
sen·so·ry neu·rona neuron conveying information originating from sensory receptors or nerve endings; an afferent neuron, may be a general or special sensory neuron.neuron (noo'ron?) [Gr. neuron, nerve, sinew]  NEURON STRUCTUREA nerve cell, the structural and functional unit of the nervous system. A neuron consists of a cell body (perikaryon) and its processes, an axon and one or more dendrites. Neurons function in the initiation and conduction of impulses. They transmit impulses to other neurons or cells by releasing neurotransmitters at synapses. Alternatively, a neuron may release neurohormones into the bloodstream. Synonym: nerve cell See: illustrationneuronal (noor''on-al), adjectiveafferent neuronA neuron that conducts sensory impulses toward the brain or spinal cord. Synonym: sensory neuronassociation neuronInterneuron.associative neuronA neuron that mediates impulses between a sensory and a motor neuron.bipolar neuron1. A neuron that bears two processes. 2. A neuron of the retina that receives impulses from the rods and cones and transmits them to a ganglion neuron. See: retina for illus. central neuronA neuron confined entirely to the central nervous system.commissural neuronA neuron whose axon crosses to the opposite side of the brain or spinal cord.efferent neuronA neuron whose axon carries motor impulses away from the brain or spinal cord.gamma motor neuronA small nerve originating in the anterior horns of the spinal cord that transmits impulses through type A gamma fibers to intrafusal fibers of the muscle spindle for muscle control. ganglion neuronA neuron of the retina that receives impulses from bipolar neurons. Axons of ganglion neurons converge at the optic disk to form the optic nerve. See: retina for illus.internuncial neuronInterneuron.lower motor neuronA peripheral motor neuron that originates in the ventral horns of the gray matter of the spinal cord and terminates in skeletal muscles. Lesions of these neurons produce flaccid paralysis of the muscles they innervate. Synonym: lower motoneuronmirror neuronAny of a group of neurons that become active both when an animal moves in a certain way and when the animal observes others performing the same action. Learning by simulation or imitation is thought to be a function of the system of mirror neurons in the brain. motor neuronA neuron that carries impulses from the central nervous system either to muscle tissue to stimulate contraction or to glandular tissue to stimulate secretion.multipolar neuronA neuron with one axon and many dendrites. peripheral neuronA neuron whose process constitutes a part of the peripheral nervous system (cranial, spinal, or autonomic nerves). peripheral motor neuronA motor neuron that transmits impulses to skeletal muscle. Synonym: peripheral motoneuronpostganglionic neuronA neuron of the autonomic nervous system whose cell body lies in an autonomic ganglion and whose axon terminates in a visceral effector (smooth or cardiac muscle or glands). preganglionic neuronA neuron of the autonomic nervous system whose cell body lies in the central nervous system and whose axon terminates in a peripheral ganglion, synapsing with postganglionic neurons. sensory neuronAfferent neuron.serotonergic neuronA nerve cell that uses serotonin as its neurotransmitter. unipolar neuronA neuron whose cell body bears one process. upper motor neuronA motor neuron (actually an interneuron) found completely within the central nervous system that synapses with or regulates the actions of lower motor neurons in the spinal cord and cranial nerves. Lesions of these neurons produce spastic paralysis in the muscles they innervate. Synonym: upper motoneuronsensory neuron or sensory cell a neuron that conducts impulses from the periphery of an organ to the CNS.sensory neuron
Related to sensory neuron: nervous system, motor neuron, Association neuronSynonyms for sensory neuronnoun a neuron conducting impulses inwards to the brain or spinal cordSynonymsRelated Words- nerve cell
- neuron
- afferent
- afferent nerve
- sensory nerve
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