The video tutorial explains the anatomy and function of the Golgi tendon organ (GTO), a sensory receptor located in muscle tendons. It monitors muscle tension and force, sending signals to the brain for proprioceptive feedback. The GTO also plays a crucial role in preventing muscle and tendon damage by triggering a reflex arc that inhibits the contracting muscle and activates the antagonist muscle when excessive force is detected. This reflex helps protect tendons from tearing by reducing muscle force generation.

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