Patellar reflex involves peripheral muscle reflexes, which is a brief stimulation to the muscle spindle that results in contraction of the effector muscle. Reflex actions can occur without having to pass directly into the brain, but synapse in the spinal cord. When the patellar is tapped below the knee, the tap initiates an action potential in the muscle spindle within the quadriceps. This action potential travels to the spinal cord onto a motor nerve. The result of this motor nerve activity is contraction of the quadriceps muscle, resulting in a knee jerk. Therefore, reflex arc is separate from conscious movement.
No, Riley cannot feel any pain in her feet when the neurologist pinches them, because she cannot receive the signals in her brain
No, Riley cannot feel any pain in her feet when the neurologist pinches them, because she cannot receive the signals in her brain