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A nuclear chain fiber is a specialized sen … A nuclear chain fiber is a specialized sensory organ contained within a muscle. Nuclear chain fibers are intrafusal fibers that, along with nuclear bag fibers, make up the muscle spindle responsible for the detection of changes in muscle length. There are 3–9 nuclear chain fibers per muscle spindle that are half the size of the nuclear bag fibers. Their nuclei are aligned in a chain and they excite the secondary nerve. They are static, whereas the nuclear bag fibers are dynamic in comparison. The name "nuclear chain" refers to the structure of the central region of the fiber, where the sensory axons wrap around the intrafusal fibers. The secondary nerve association involves an efferent and afferent pathway that measure the stress and strain placed on the muscle (usually the extrafusal fibers connected from the muscle portion to a bone). The afferent pathway resembles a spring wrapping around the nuclear chain fiber and connecting to one of its ends away from the bone. Again, depending on the stress and strain the muscles sustains, this afferent and efferent coordination will measure the "stretch of the spring" and communicate the results to the central nervous system. A similar structure attaching one end to muscle and the other end to a tendon is known as a Golgi tendon organ. However, Golgi tendon organs differ from nuclear chain and nuclear bag fibers in that they are considered in series rather than in parallel to the muscle fibers.her than in parallel to the muscle fibers.
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https://web.archive.org/web/20070703184921/http:/www.unmc.edu/Physiology/Mann/mann11.html +
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703772
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3466
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http://dbpedia.org/resource/Type_Ia_sensory_fibers +
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A muscle spindle, with γ motor and Ia sensory fibers
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| http://dbpedia.org/property/date
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"2007-07-03"^^xsd:date
, July 2019
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| http://dbpedia.org/property/latin
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myofibra catenaformis
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| http://dbpedia.org/property/name
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Nuclear chain fiber
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http://dbpedia.org/resource/Muscle_spindle +
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| http://dbpedia.org/property/reason
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So, what are the differences of being 'static' and 'dynamic' ?
, Principle of Neural Science says it has innervation from both the primary and secondary afferents. Why would this just excite the secondary nerve??
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| rdfs:comment |
A nuclear chain fiber is a specialized sen … A nuclear chain fiber is a specialized sensory organ contained within a muscle. Nuclear chain fibers are intrafusal fibers that, along with nuclear bag fibers, make up the muscle spindle responsible for the detection of changes in muscle length. A similar structure attaching one end to muscle and the other end to a tendon is known as a Golgi tendon organ. However, Golgi tendon organs differ from nuclear chain and nuclear bag fibers in that they are considered in series rather than in parallel to the muscle fibers.her than in parallel to the muscle fibers.
|
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Nuclear chain fiber
|
