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Physiology Nervous System 424ad9f5

Inverse stretch reflex is mediated by?

A
Muscle spindle
B
Golgi tendon organ
C
Unmyelinated C fibres
D
B fibers
High-Yield Explanation
Ans. (b) Golgi Tendon organRef: Ganong 25th ed. / 232A Golgi Tendon Reflex/ Inverse Stretch Reflex Operates as follows:* As the tension applied to a tendon increases, the Golgi tendon organ (sensor) is stimulated.* Nerve impulses (action potentials) arise and propagate along the lb sensory nerve fibers into the spinal cord.* Within the spinal cord , the lb sensory nerve fibers synapse and generate an IPSP (inhibitory post synaptic potential) on the motor neurons that supply the muscles form which the fibers arise* The muscle relaxes and excess tension is relieved.

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