The knee-jerk reflex is controlled by interneurons in the

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The knee-jerk reflex is a spinal reflex that is controlled by interneurons in the spinal cord. When the patellar tendon is tapped, sensory neurons in the muscle spindle of the quadriceps femoris muscle send a signal to the spinal cord, which then sends a signal through interneurons to motor neurons in the same muscle, causing it to contract and produce a knee-jerk response. The limbic system and cerebellum are not directly involved in this reflex, and while the brainstem is involved in regulating some reflexes, it is not the primary control center for the knee-jerk reflex.

The Knee-Jerk Reflex Is Controlled by Interneurons in the