User:StretchingSparrow/sandbox: Difference between revisions
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=== Structure === |
=== Structure === |
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The stretch reflex is accomplished through several different structures. In the muscle, there are muscle spindles, whose extrafusal muscle fibers lie parallel to the muscle and sense changes in length and velocity. The afferent sensory neuron is the structure that carries the signal from the muscle to the spinal cord. It carries this action potential to the dorsal root ganglion of the spinal cord. The efferent sensory neuron is the structure that carries the signal from the spinal cord back to the muscle. It carries the action potential from the ventral root of the spinal cord to the muscle down the alpha motor neuron<ref>{{Citation|last=Dolbow|first=James|title=Neuroanatomy, Spinal Cord Myotatic Reflex|date=2019|url=http://www.ncbi.nlm.nih.gov/books/NBK551629/|work=StatPearls|publisher=StatPearls Publishing|pmid=31869093|access-date=2019-12-30|last2=Bordoni|first2=Bruno}}</ref>. This synapsis on the first structure discussed, the extrafusal fibers of the muscle spindle. |
The stretch reflex is accomplished through several different structures. In the muscle, there are muscle spindles, whose extrafusal muscle fibers lie parallel to the muscle and sense changes in length and velocity. The afferent sensory neuron is the structure that carries the signal from the muscle to the spinal cord. It carries this action potential to the dorsal root ganglion of the spinal cord. The efferent sensory neuron is the structure that carries the signal from the spinal cord back to the muscle. It carries the action potential from the ventral root of the spinal cord to the muscle down the alpha motor neuron<ref>{{Citation|last=Dolbow|first=James|title=Neuroanatomy, Spinal Cord Myotatic Reflex|date=2019|url=http://www.ncbi.nlm.nih.gov/books/NBK551629/|work=StatPearls|publisher=StatPearls Publishing|pmid=31869093|access-date=2019-12-30|last2=Bordoni|first2=Bruno}}</ref>. This synapsis on the first structure discussed, the extrafusal fibers of the muscle spindle. |
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=== Clinical Significance === |
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The knee jerk reflex is an example of the stretch reflex and it is used to determine the sensitivity. |
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Revision as of 05:50, 30 December 2019
Structure
The stretch reflex is accomplished through several different structures. In the muscle, there are muscle spindles, whose extrafusal muscle fibers lie parallel to the muscle and sense changes in length and velocity. The afferent sensory neuron is the structure that carries the signal from the muscle to the spinal cord. It carries this action potential to the dorsal root ganglion of the spinal cord. The efferent sensory neuron is the structure that carries the signal from the spinal cord back to the muscle. It carries the action potential from the ventral root of the spinal cord to the muscle down the alpha motor neuron[1]. This synapsis on the first structure discussed, the extrafusal fibers of the muscle spindle.
Clinical Significance
The knee jerk reflex is an example of the stretch reflex and it is used to determine the sensitivity.
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- ^ Dolbow, James; Bordoni, Bruno (2019), "Neuroanatomy, Spinal Cord Myotatic Reflex", StatPearls, StatPearls Publishing, PMID 31869093, retrieved 2019-12-30