Golgi tendon organ

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organ

 [or´gan]
accessory digestive o's (accessory o's of digestive system) organs and structures not part of the alimentary canal that aid in digestion; they include the teeth, salivary glands, liver, gallbladder, and pancreas.
organ of Corti the organ lying against the basilar membrane in the cochlear duct, containing special sensory receptors for hearing, and consisting of neuroepithelial hair cells and several types of supporting cells.
effector organ a muscle or gland that contracts or secretes, respectively, in direct response to nerve impulses.
enamel organ a process of epithelium forming a cap over a dental papilla and developing into the enamel.
end organ end-organ.
Golgi tendon organ any of the mechanoreceptors arranged in series with muscle in the tendons of mammalian muscles, being the receptor for stimuli responsible for the lengthening reaction.
sense o's (sensory o's) organs that receive stimuli that give rise to sensations, i.e., organs that translate certain forms of energy into nerve impulses that are perceived as special sensations.
spiral organ organ of Corti.
target organ the organ affected by a particular hormone.
vestigial organ an undeveloped organ that, in the embryo or in some remote ancestor, was well developed and functional.
o's of Zuckerkandl para-aortic bodies.

Gol·gi ten·don or·gan

(gol'jē),
a proprioceptive sensory nerve ending embedded among the fibers of a tendon, often near the musculotendinous junction; it is compressed and activated by any increase of the tendon's tension, caused either by active contraction or passive stretch of the corresponding muscle.

Golgi tendon organ

Etymology: Camillo Golgi
a sensory nerve ending that is sensitive to both tension and excessive passive stretch of a skeletal muscle.
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Golgi tendon organ

Gol·gi ten·don or·gan

(GTO) (gol'jē ten'dŏn ōr'găn)
A proprioceptive sensory nerve ending embedded among the fibers of a tendon, often near the musculotendinous junction; it is activated by any increase of tension in the tendon, caused either by active contraction or passive stretch of the corresponding muscle.
Synonym(s): neurotendinous spindle.

Golgi tendon organ

A tension-detecting sensor wrapped around collagen bundles in tendons that provides afferent nerve information about the state of tightness of the tendon.

Golgi,

Camillo, Italian histologist and Nobel laureate, 1844-1926.
Golgi apparatus - a membranous system of cisternae and vesicles concerned with intracellular transport of membrane-bounded secretory proteins. Synonym(s): dictyosome; Golgi body; Golgi complex; Golgi internal reticulum; Holmgrén-Golgi canals
Golgi body - Synonym(s): Golgi apparatus
Golgi cells
Golgi complex - Synonym(s): Golgi apparatus
Golgi corpuscle
Golgi internal reticulum - Synonym(s): Golgi apparatus
Golgi osmiobichromate fixative - an osmic-bichromate mixture used to demonstrate nerve cells and their processes.
Golgi stain - any of several methods for staining nerve cells, nerve fibers, and neuroglia.
Golgi tendon organ - a proprioceptive sensory nerve ending embedded among the fibers of a tendon. Synonym(s): neurotendinous organ; neurotendinous spindle
Golgi zone - part of the cytoplasm occupied by the Golgi apparatus.
Golgi-Mazzoni corpuscle - an encapsulated sensory nerve ending.
Holmgrén-Golgi canals - Synonym(s): Golgi apparatus

Golgi tendon organ

stretch-sensitive, proprioceptive sensory nerve endings within tendons; their stimulation initiates the motor reflex (see Table 1)
Table 1: Afferent sensory impulses from the skin and superficial tissues
SensationSpecialized nerve endingSubserving nerve fibre
Light touchMeissner's corpusclesA-beta
VibrationPacinian corpusclesA-beta
Positional awarenessJoint proprioceptors
Golgi tendon organs
Muscle stretch receptors
A-beta
Sharp painFree nerve endings (high-threshold polymodal and thermo/mechanical nociceptors)A-delta
Dull pain/acheFree nerve endings (high-threshold polymodal nociceptors)C
TemperatureFree nerve endings (high-threshold thermal nociceptors)C

Golgi tendon organ

any of the mechanoreceptors arranged in series with muscle in the tendons of mammalian muscles, being the receptors for stimuli responsible for the lengthening reaction.
Enlarge picture
Golgi tendon organ. By permission from GuytonR, Hall JE, Textbook of Medical Physiology, Saunders, 2000