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Topic: Golgi tendon organs


  
 Tendon - Wikipedia, the free encyclopedia
The Achilles tendon is a particularly large tendon connecting the heel to the muscles of the calf.
A tendon inserts into bone at an enthesis where the collagen fibres are mineralised and integrated into bone tissue.
Collagen fibers from within the muscle organ are continuous with those of the tendon.
http://en.wikipedia.org/wiki/Tendon   (709 words)

  
 The Nervous System
Furthermore, Golgi tendon organs are not concerned with changes in muscle length, but in the increased tension of the muscle as a result of a change in its length.
The above is a brief synopsis of the functional and structural classifications of neurons, muscle spindles, Golgi tendon organs and reflex arcs.
They are the spatial monitors of the body; their feedback enables the body to be aware of the posture or position of a limb even when the eyes are closed.
http://www.sagewoodwellness.com/Doc0010.htm   (1187 words)

  
 Golgi Tendon Organs
During running, don't we experience the effects of both the golgi tendon organ and the muscle spindle.
For example, much of Houk's work on the GTO was done with cats who had had their spinal cords cut or certain parts of the brain destroyed.
Does this not demonstrate that the golgi tendon organ inhibitory reflex can be greater than the muscle spindles excitatory reflex?
http://www.exrx.net/Questions/GTO.html   (2344 words)

  
 Dorlands Medical Dictionary
pertaining to or arising from an organ or the organs; cf.
lia,   genital organs: the various internal and external organs that are concerned with reproduction; see organa genitalia feminina externa, organa genitalia feminina interna, organa genitalia masculina externa, and organa genitalia masculina interna.
lateral line organs,   a system of sense organs arranged in longitudinal canals in the skin of fishes and amphibians; they contain mechanoreceptors that are sensitive to changes in pressure and current and to vibrations of low frequency and thus aid in localizing objects.
http://www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_o_06zPzhtm   (3255 words)

  
 Chapter 4
To explain the components in a reflex arch, the muscle tendon, the Golgi tendon organ, the flexor reflex, the crossed extensor reflex, reciprocal innervation and inhibition, alpha-gamma-coactivation, the effect of gamma-efferents on muscle length, the effects of a spinal cross sectional lesion, the orientation reflex, exteroceptive and proprioceptive reflexes, and muscular force.
The phasic stretch reflex is elicited in the clinic by a light tap on a muscle tendon.
The inverse stretch reflex or the Golgi tendon reflex completes the stretch reflex by a force-controlling feedback.
http://www.mfi.ku.dk/ppaulev/chapter4/chapr_4.htm   (9033 words)

  
 The Neurological Control System for Normal Gait - Journal of Prosthetics and Orthotics, 1990 American Academy of ...
The golgi tendon organs are encapsulated organs which are attached in series to the collagenous fibers of tendons at the point of muscle insertions and also exist in the fascial coverings of muscles.
The muscle spindle and golgi tendon are the sensory organs responsible for monitormg muscle tone.
lB afferents coming from the golgi tendon organs to the spinal cord are stimulated by muscle tension and selectively inhibit the alpha motorneurons of the agonist muscles while facilitating those of the antagonist muscles.
http://www.oandp.org/jpo/library/1990_01_001.asp   (4978 words)

  
 Effect of eccentric muscle contractions on golgi tendon organ responses to passive and active tension in the cat -- ...
To investigate the possibility of a peripheral contribution to the perturbations of force sensation reported to occur after eccentric exercise, responses to passive and active tension were recorded from Golgi tendon organs in the medial gastrocnemius muscle of the anaesthetised cat, before and after a series of eccentric contractions.
Following the eccentric contractions, there was a small, but not significant, increase in tendon organ sensitivity to active tension, which was graded using a method of optimised, distributed stimulation of divided ventral roots.
The experiments provided the opportunity of comparing tendon organ sensitivities to graded passive and active whole muscle tension.
http://jp.physoc.org/cgi/content/abstract/2001.012785v1   (367 words)

  
 Marathoning Start to Finish
Impulses from the Golgi tendon organs cause reflex relaxation of the muscle and its opposing muscle.
If the stretch is held longer than 6 seconds, the Golgi tendon organs respond allowing the muscle to reflexively relax.
The main function of the spindles is to respond to stretch in a muscle and, through reflex action, initiate a stronger contraction to reduce this stretch.
http://www.teamoregon.com/publications/marathon/stretchi.html   (993 words)

  
 Life and Discoveries of Camillo Golgi
However, convinced that theories had to be supported by facts, Golgi soon abandoned psychiatry and concentrated on the experimental study of the structure of the nervous system.
Golgi was an exceptionally acute and prolific investigator, who provided a number of outstanding observations.
Although he misinterpreted the overall view of the organization of the nervous system, he contributed highly to the modern knowledge of its structure.
http://nobelprize.org/medicine/articles/golgi   (1619 words)

  
 Ultra Fitness - Muscle Cramps
Poor posture and inefficient movement patterns may cause the Golgi tendon organs to malfunction in a similar way as explained above.(2) The GTO cannot get the muscle to relax and a cramp begins.
During exercise these two-joint muscles are often contracted in their shortened position leading to less tension in their tendons as well as less activity of their GTO.
Another theory offers that carbohydrate depletion may also cause muscle cramps.(2) This ties in with the abnormal spinal reflex theory as muscle fatigue is thought to play an important role in developing cramps.
http://www.ultrafitness.net/article_5.htm   (983 words)

  
 Sensory Structures
Visceral - senses that are responsible for nausea and pain in visceral organs.
Proprioceptors are located in muscles, tendons, and joint capules and allow the brain to sense the position of the body parts (kinesthetic sense).
The sense organs are those parts of the peripheral nervous system that convert various forms of energy into neural impulses.
http://www.dwu.edu/biology/Mullican/anaout15.htm   (536 words)

  
 Lecture Outline 19
Golgi tendon organs in tendons work opposite to muscle spindles; stretch when muscle contracts.
Somatic senses are associated with the skin, muscles, joints, and internal organs.
Sense movement of ligaments, stretch of tendons, degree of muscle contraction.
http://www.mhhe.com/biosci/genbio/maderinquiry/lecture/lecture19.html   (1730 words)

  
 [No title]
She has a Babinski response from her right foot and her deep tendon reflexes are increased on the right side of her body.
Dorsal rhizotomy is a surgical procedure which may be done to remove the afferents to the stretch reflex and relieve rigidity.
the input most effective in eliciting the reflex is from the Golgi tendon organs.
http://www.smbs.buffalo.edu/acb/neuro/exam397.txt   (1871 words)

  
 Reflexes and Spinal Nerves
The behavior of the tendon reflex in the performance of some skills by beginners is also a matter of interest.
When tension is produced by muscle fibers, the Golgi tendon organs, which are located at the musculoskeletal juncture, are stimulated and signals are sent to the spinal cord.
When tension on the muscle is extreme, the Golgi tendon organs inhibiting action cause a sudden relaxation of the muscle.
http://www.garmonechiropractic.com/reflexes_and_spinal_nerves.htm   (491 words)

  
 CHIROWEB DC Archives - (JMPT - Abstracts for January 2001, Volume 24 - Number 1)
The purpose of the present study was to determine if muscle spindles and Golgi tendon organs in paraspinal muscles respond to a mechanical load whose force-time profile is similar to that of a spinal manipulation.
Loading of the vertebral column during a sham manipulation may affect the discharge of paraspinal proprioceptors.
The physiologically relevant portion of the manipulation may relate to its ability to increase as well as decrease the discharge of muscle proprioceptors.
http://www.chiroweb.com/archives/19/03/10.html   (1816 words)

  
 Spinal cord
If a spastic muscle is stretched beyond a certain point there is a sudden decrease in resistance: this is in part due to firing from the Golgi tendon organs which lie in series with groups of muscle fibers.
(Synonyms are myotactic reflex, stretch reflex, tendon-jerk reflex, deep tendon reflex).
vibration induced by the tendon hammer is conducted through the bone to other muscle spindles and activates them: an example is the crossed adductor reflex.
http://www.sun.ac.za/neurology/lectures/spinalcord.htm   (1993 words)

  
 [No title]
The Golgi tendon organ lies in the tendon and is activated when the tension increases (when the muscle is contracting very hard and pulling on the tendon).
We have two major proprioceptors: Muscle spindles Golgi tendon organs Muscle spindles sense stretch in the muscle, Golgi tendon organs sense tension on the tendon (or muscle contraction).
We have smooth muscles that control our organs, cardiac muscles that control our heart, and skeletal muscles that control our voluntary muscles.
http://www.sci.sdsu.edu/classes/psychology/psy260/jthomas/handouts/motor.doc   (511 words)

  
 Improving Proprioception
These specialized nerve fibers provide information regarding the status and function of the musculoskeletal system with a constant flow of information to the spinal cord, the cerebellum, and the brain.
Beyond being just an annoyance, faulty coordination or misalignments can also be the source of chronic, unresolving pain.
Without this basic "wiring", proper joint alignment can’t be maintained, and relaxed, upright posture is almost impossible.
http://www.ccptr.org/KDC/improving__proprioception.htm   (1191 words)

  
 Delsys Contest
A closed-loop feedback model incorporating the intrinsic muscle contributions (stiffness and viscosity) and reflexive contributions (muscle spindle and Golgi tendon organs, GTO) was developed.
Goal of the research program is to assess the importance of the contribution of the proprioceptive reflexes for posture maintainance.
Principally, identification of the separate pathways can only be done using external perturbations.
http://www.delsys.com/contest/winners2004.htm   (607 words)

  
 Integrative Neuroscience
Negative feedback regulation of muscle tension by Golgi tendon organs.
http://www.utdallas.edu/~tres/integ/mot1/display1_19.html   (10 words)

  
 Number, Distribution, and Morphologic Particularities of Encapsulated Proprioceptors in Pig Extraocular Muscles -- ...
GTOs in pig EOMs are associated with one to three muscle fibers,
muscle contraction is the effective stimulus for GTO excitation.
Bridgeman, CF (1970) Comparison in structure of tendon organs in the rat, cat and man J Comp Neurol 138,369-372
http://www.iovs.org/cgi/content/full/42/13/3085   (5360 words)

  
 431-417 Biomedical Engineering
Briefly explain how action potentials generated by muscle spindles and Golgi tendon organs implement negative feedback in spinal reflexes.
Golgi tendon organs measure muscle tension (or force)
Action potentials are fed back via afferent nerves to inhibitory neurons in the spine.
http://www.ecr.mu.oz.au/~rwb/examlect.html   (1107 words)

  
 The Motor System
A reflex that involves the Golgi tendon sensory organ.
As the muscle contracts and a greater tension develops in the muscle the Golgi tendon organ firing rate increases.
Sensory info from Golgi tendon organ enters spinal cord.
http://www.bioweb.uncc.edu/humanphys/motor.htm   (2329 words)

  
 Preventing CO Poisoning in your Home
Sensory pain can be described as "an unpleasant sensory experience which evokes an adversive emotional reaction." Sensory pain occurs as a consequence of injury, damage or potential damage of the skin, subcutaneous tissues or internal organs.
When damage to a tissue occurs, peripheral sensory detectors (nociceptors) are excited and activate their sensory nuclei and second order neuron pain pathways at their appropriate spinal cord level.
high velocity adjustments have the ability to produce a strong stretch on the muscle tendon complex, activating the GTO and inducing reflexive muscle relaxation (autogenic relaxation)
http://www.sdapublishing.com/archives/The_Role_of_Chiropractic.htm   (2032 words)

  
 central nervous system
One stretch reflex is the patellar or knee-jerk reflex.
When the tension in a tendon becomes too strong, this reflex causes the relaxation of the muscle
They are tested by tapping on the tendon of the muscle to see if the reflex takes place
http://www.ncws.com/lars/anatomy/notes\spinal.htm   (3263 words)

  
 Morphological observations of motor units connected in-series to Golgi tendon organs -- Spielmann and Stauffer 55 (1): ...
the individually depleted muscle fibers that inserted on the GTO sample.
The glycogen-depletion technique (17, 32) has been used to examine the
relationship was found between GTO discharge rate and the cross-sectional
http://jn.physiology.org/cgi/content/abstract/55/1/147   (224 words)

  
 E F G H
Glaucoma (glaw-ko mah) Condition in which intraocular pressure increases to levels that cause compression of the retina and optic nerve; results in blindness unless detected early.
Fulcrum The fixed point on which a lever moves when a force is applied.
Hilton's law Any nerve serving a muscle producing movement at a joint; also innervates the joint itself and the skin over the joint.
http://occawlonline.pearsoned.com/bookbind/pubbooks/mariebhap/chapter0/medialib/glossary_eh.html   (3577 words)

  
 Neuromuscular System
Golgi tendon organs- sensitive to stretch of the tendon due to muscular contraction and causes the muscle to relax.
Tendon reflex- when the tendon (GTOs are stretched as well) is stretched the agonist relaxes and the antagonist contracts.
This may inhibit follow through in a beginner trying to generate force from a throw.
http://www.sonoma.edu/people/boda/kin350/neuromuscularsystem.htm   (1285 words)

  
 Receptor Mechanisms Underlying Heterogenic Reflexes Among the Triceps Surae Muscles of the Cat -- Nichols 81 (2): 467 ...
Jankowska, E. Interneuronal relay in spinal pathways from proprioceptors.
more firmly the role of the Golgi tendon organ in the reflex inhibition.
and through the tendons of each of the triceps muscles for setting
http://jn.physiology.org/cgi/content/full/81/2/467   (7213 words)

  
 SPINAL MOTOR STRUCTURES
The Golgi tendon organs, on the other hand, begin to fire when the tension on the tendon is so great that you are in danger of injury.
Instead they are embedded in the tendon, and monitor overall muscle tension from there.
Now, there is a potential problem with the muscle spindle system which may have occurred to you.
http://thalamus.wustl.edu/course/spinal.html   (1662 words)

  
 Alfred Mann Institute: Projects: BION: Musculoskeletal Modeling: The Golgi Tendon Organ
While the individual GTOs may be strongly influenced by the vagaries of muscle fiber sampling and recruitment, the aggregate activity may be a more reliable indicator of total muscle force.
We are now using the model to explore the relationship between aggregate GTO activity and total muscle force, as well as how that relationship may change by various distributions of receptors, MUs and recruitment patterns.
To quantify these effects, we created a statistical model of the distributions of muscle fibers belonging to individual MUs and of GTO receptors in the medial gastrocnemius muscle of a cat.
http://ami.usc.edu/projects/ami/projects/bion/musculoskeletal/golgi_tendon_organ.html   (394 words)

  
 Jade, magnetic and bio spectrum mattress
Magnetic health therapy may aid in relief of pain and speed the healing process due to the increase in blood flow and oxygenation of the blood that magnetic therapy may provide.
Relieves muscle spasm Muscle spasms have long been observed to be reduced through the use of heat, be they secondary to underlying skeletal, joint, or neuropathological conditions.
Magnetic therapy and magnets may help you or someone you know who has pain and suffers from: Headaches, Migraine, Back Pain, Menstrual Pain, Arthritis, Post Polio, Knee Pain, Sciatica, Tendonitis, Elbow Pain, Foot Pain, Leg Pain, Carpal Tunnel Syndrome and many more.
http://www.myholistic.com/mall/telstar/Q0.php3   (4101 words)

  
 Neuroscience at a Glance
Muscle spindle is an encapsulated sensory organ that lies within muscles and conveys information to the spinal cord as well as receiving a specific input from the anterior horn gamma-motorneuron.
It is important in setting muscle tone, mediating the tendon stretch reflex, as well as providing useful proprioceptive information to the CNS
Autonomic nervous system (ANS) has a central and peripheral component and is concerned with the innervation of internal and glandular organs.
http://www.medicalneuroscience.com/ngloss.htm   (6828 words)

  
 Tonic Function
) (The Golgi tendon organs are intentionally left out of this discussion in order to focus on aspects of the gravity system that link with brain function.) This feedback system can adjust tonus in muscles without our conscious awareness.
http://www.somatics.de/KevinFrank/FrankKevin.htm   (5523 words)

  
 Module 3
Bilateral absence of the superior oblique tendon was noted at the time of surgery in the 2-year-old boy.
The foot is a complex region of the body that includes the vascular, neurologic, dermatologic, and musculoskeletal organ systems.
Chronic musculoskeletal overuse gradually leads to tendon and nerve disorders.
http://www.dendrites.com/mod3r.html   (14970 words)

  
 [No title]
control of sense organs so an animal will not be confused by sensory stimulation arising from its own movement.
in conjunction with activity in other neurons from a sense organ showing range fractionation, stimulus quality can be determined.
Protection of a sense organ against strong stimuli is one suggested function of a.
http://soma.npa.uiuc.edu/courses/bio303/TestBank/Ch10_Key.html   (756 words)

  
 Golgi Definition / Golgi Research
Golgi studied medicine at University of Pavia, where he worked in the experimental pathology laboratory under Giulio Bizzozero, who elucidated the properties of bone marrow.
(Italian histologist noted for work on the structure of the nervous system and for his discovery of Golgi bodies (1844-1926))
In cell biology, the Golgi apparatus, Golgi body, Golgi complex, or dictyosome is an organelle located in most eukaryotic Eukaryotes are organisms with complex cells, in which the genetic material is organized into membrane-bound nuclei.
http://www.elresearch.com/Golgi   (560 words)

  
 [No title]
The receptive field is the body region in which a stimulus evokes a response.
Signals travel to the CNS for integration, allowing reflex or conscious reactions to environmental changes.
Sense organs respond to stimuli by generating action potentials in an associated sensory (afferent) nerve cell process.
http://www.loyno.edu/~chood/histnotessense.html   (5876 words)

  
 [No title]
(1 mark) _________________________________ Beside muscle spindles and Golgi tendon organs, name another place where the brain gets information about the orientation of the body.
(1 mark) _____________________________ As the Golgi tendon organ gets stretched, what happens in terms of the action potentials going to the brain — what changes about them?
(1 mark) __________________________________________ Why does it make sense that the signals going to the brain from the Golgi tendon organ inhibit further muscle contraction?
http://www.ucalgary.ca/~nsharma/downloads/tutorials/F04_3361_Quiz_5_Ver_D.doc   (180 words)

  
 AST Sports Science - QA
Some strength coaches attribute tremendous strength increases from lock-outs to an inhibition of the golgi tendon threshold.
As I said previously, the world’s best strength trainers know the secret to dramatic increases in strength is raising the golgi tendon threshold in muscles.
The golgi tendon organs are tension/stretch receptors located in muscle tendons.
http://www.ast-ss.com/print_page.asp?id=2077&type=QA   (370 words)

  
 e-Tips
If this is the cause, prevention may involve improving biomechanics, and regular stretching and strengthening of muscles that seem to cramp along with their antagonistic muscles.
There may be some quirk of body mechanics that upsets a Golgi device and sets off the cramping pattern.
Poor movement patterns may cause a disturbance in the activity of the Golgi tendon organs.
http://www.ultrafit.com/newsletter/june00.html   (4359 words)

  
 Stochastic Resonance in Muscle Receptors -- Fallon et al. 91 (6): 2429 -- Journal of Neurophysiology
The response of a single Golgi tendon organ Ib afferent to both
, this study demonstrates that both Golgi tendon organ
The left soleus muscle and its tendon were dissected free.
http://jn.physiology.org/cgi/content/full/91/6/2429   (4678 words)

  
 Proprioceptive Control of Extensor Activity during Fictive Scratching and Weight Support Compared to Fictive Locomotion ...
and Golgi tendon organs) induces oligosynaptic reflexes in extensor
Domer FR, Feldberg W (1960) Scratching movements and facilitation of the scratch reflex produced by tubocurarine in cats.
Key words: primary muscle spindles; Golgi tendon organs; spinal cord; sensory feedback; rhythm generating networks; motoneuron; motor control
http://www.jneurosci.org/cgi/content/full/19/24/10966   (6700 words)

  
 Somatosensory pathways - Body
(For more on the muscle spindle see "Spinal motor structures".) There are also Golgi tendon organs and joint afferents to monitor stresses and forces at the tendons and joints.
Instead, it uses free nerve endings throughout skin, muscle, bone, and connective tissue to perceive changes in temperature and pain peptides.
The pain and temperature system does not have specialized receptor organs.
http://thalamus.wustl.edu/course/body.html   (1697 words)

  
 www.aprioriathletics.com/glossary
The level of awareness of the sense of movement and position of the body and limbs.
The empahasis is on how the structure affects the motion and stability of the human body.
Sense of movement and position of the body and limbs made possible by receptors, such as semicircular canals utricle and saccule hair cells, Golgi tendon organs, muscle spindles, joint receptors, skin receptors (cutaneous and subcutaneous).
http://www.aprioriathletics.com/glossary/k.html   (430 words)

  
 flexibility
Thus, this is why one will experience a relative relaxation to the initial tension of a stretch after the stretch is "held" for longer than 5 seconds.
Golgi tendon organs are also sensitive to the length of the muscle fibers and will send an impulse to the nervous system.
are also specialized organs in the muscle which respond after the muscle spindles (a few seconds) if the stretch is held.
http://www.emunix.emich.edu/~bogle/flexibility.htm   (950 words)

  
 Golgi tendon organs - Art History Online Reference and Guide
Golgi tendon organs are organs in the tendons of skeletal muscle, where they are subject to stretching as the muscle is stretched.
These afferent receptors alter their rate of firing according to the tension in the muscle: More tension results in more action potentials fired.
Golgi tendon organs - Your Art History Reference Guide!
http://www.arthistoryclub.com/art_history/Golgi_tendon_organs   (103 words)

  
 Howstuffworks "What makes your knuckles pop?"
When joints are manipulated, the Golgi tendon organs (a set of nerve endings involved in humans' motion sense) are stimulated and the muscles surrounding the joint are relaxed.
This is part of the reason why people can feel "loose" and invigorated after leaving the chiropractor's office, where cavitation is induced as part of the treatment.
On the positive side, there is evidence of increased mobility in joints right after popping.
http://www.howstuffworks.com/question437.htm   (466 words)

  
 Responses of isolated Golgi tendon organs of the cat to muscle contraction and electrical stimulation -- Fukami 318 ...
Golgi tendon organ remained almost constant with changes in muscle length
Responses of isolated Golgi tendon organs of the cat to muscle contraction and electrical stimulation
applied extracellularly to a GTO through its axon initiated a train of
http://jp.physoc.org/cgi/content/abstract/318/1/429   (272 words)

  
 Formation of supernumerary muscle spindles at the expense of Golgi tendon organs in ER81-deficient mice.
Concomitantly, a deficiency of Golgi tendon organs (GTOs) and Ib afferents was observed in distal muscles, as if supernumerary spindles formed at the expense of tendon organs in the absence of Er81.
Proximal muscle nerve stimulation elicits fewer monosynaptic potentials than stimulation of distal nerves in hindlimbs, a deficit that is paralleled by a paucity of muscle spindles in proximal muscles (Arber et al., 2000).
Formation of supernumerary muscle spindles at the expense of Golgi tendon organs in ER81-deficient mice.Mice lacking Er81 genes exhibit reduced monosynaptic sensory-motoneuron connectivity in response to muscle nerve stimulation.
http://www.pdg.cnb.uam.es/UniPub/iHOP/gp/9400909.html   (240 words)

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