Hnéviðbragðið
Hnéviðbragðið, commonly known as the knee-jerk reflex, is a basic physiological response that occurs when the patellar tendon is tapped. This stimulus causes a rapid and involuntary extension of the leg at the knee. It is a monosynaptic reflex, meaning it involves only one synapse between the sensory neuron and the motor neuron.
When the patellar tendon is struck with a reflex hammer, it stretches the quadriceps femoris muscle. Sensory
The knee-jerk reflex is a vital diagnostic tool for neurologists. An exaggerated or absent reflex can indicate