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Answer:
Golgi tendon organ
Explanation:Golgi Tendon Organ(GTO) (also called Golgi organ or neurotendinous spindle) is a sensory receptor organ that sense changes in tension of muscles.
They are located in the tendon close to the point of muscular attachment. Each Golgi tendons consist of a thin capsule of connective tissues that encloses a collagen containing fibre.
Golgi Tendon Organ is involved in the cerebellar regulation of movement and are activated by stretching or contraction of muscles
Answer: The automatic response to tensing your muscles after you hear the sound of the clanking the rollercoaster makes is an example of the phrase pavlov's dogs, which can refer to classical conditioning because it refers to the habit of automatic response to a stimulus.