Chapter: Human Nervous System and Sensory Organs : Functional Systems

Tendon Organ - Motor Systems

The Golgi tendon organ lies at the junction between tendon and muscle.

Tendon Organ

The Golgi tendon organ lies at the junction between tendon and muscle. It consists of a group of collagen fibers (D14), which is surrounded by a thin sheath of connective tissue and is innervated by a myelinated nerve fiber (D15). The nerve fiber loses its myelin sheath after passing through the connective tissue capsule and divides into a number of branches that coil around the collagen fibers. The loosely arranged col-lagen fibers (E) are thought to tighten upon tension (F) and thus exert pressure onto the nerve endings. The resulting impulse is transmitted by the nerve fiber via the poste-rior root to the spinal cord. Here it has an in-hibitory effect on the motor neurons, thus preventing the muscle from excessive stretching or contraction.

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Human Nervous System and Sensory Organs : Functional Systems : Tendon Organ - Motor Systems |