Muscle Spindle

Preferred Label : Muscle Spindle;

NCIt synonyms : Muscle Spindles;

NCIt definition : The Muscle Spindle is composed of intrafusal fibers that are located within and run parallel to the extrafusal fibers of skeletal muscle. When the extrafusal fibers are stretched, the intrafusal fibers of the spindle stretch as well. When stretching occurs, the sensory neuron from the muscle spindle signals the motor neurons located within the ventral horn of the spinal cord. This signal causes the motor neurons to fire, resulting in contraction of the muscle. This reflex arc provides negative feedback. The muscular contraction induced by the stretching works against or negates further muscle stretch. This mechanism helps to maintain proper muscle tension or tone. Although the muscle spindle helps to maintain proper muscle tension, unlike the Golgi tendon organ, it is not an indicator of muscle tension, but rather of muscle length.;

Details

Origin ID

C13824;

UMLS CUI

C0027871;

Anatomic structure is physical part of
- Muscle [NCIt concept]
- Musculoskeletal System [NCIt concept]
- Proprioceptor [NCIt concept]
Automatic exact mappings (from CISMeF team)
- muscle spindle [UBERON concept]
Currated CISMeF NLP mapping
- Muscle spindle [FMA entity]
- muscle spindle [SNOMED Notion]
- muscle spindles [MeSH Descriptor]
- muscle spindles [MeSH concept]
False automatic mappings
- Structure of muscle spindle (body structure) [SNOMED CT concept]
Semantic type(s)
- Body Part, Organ, or Organ Component [UMLS semantic type]
UMLS correspondences (same concept)
- Muscle spindle [FMA entity]
- Structure of muscle spindle (body structure) [SNOMED CT concept]
- muscle spindle [UBERON concept]
- muscle spindle [SNOMED Notion]
- muscle spindles [MeSH concept]
- muscle spindles [MeSH Descriptor]

Keyword's position in hierarchy(ies) :

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