Definition:
The knee jerk reflex, also known as the patellar reflex, is a spinal reflex that occurs when the patellar tendon is tapped, resulting in the contraction of the quadriceps muscle and the extension of the lower leg.
Definition:
The knee jerk reflex, also known as the patellar reflex, is a spinal reflex that occurs when the patellar tendon is tapped, resulting in the contraction of the quadriceps muscle and the extension of the lower leg.