Final answer:
Golgi tendon organs (GTOs) are tension receptors that sense changes in tension and are found in tendons. They detect the force of muscle contraction and regulate muscle tension. When a muscle is stretched too far, GTOs signal the muscle to relax to prevent muscle tearing.
Step-by-step explanation:
Golgi tendon organs (GTOs) are tension receptors that sense changes in tension. They are found in tendons and they detect the force of muscle contraction. GTOs respond to changes in tension by sending signals to the spinal cord and brain, which then regulate the amount of tension exerted by the muscles. For example, when a muscle is stretched too far, GTOs signal the muscle to relax in order to prevent muscle tearing.