Which of the following is an example of deep reflexes?

Explanation

The ankle jerk is elicited by tapping the Achilles tendon with a reflex hammer while the foot is dorsiflexed, which causes a contraction of the gastrocnemius muscle and a brief plantar flexion of the foot. This reflex involves the S1 nerve root and the tibial nerve. The knee jerk is elicited by tapping the patellar tendon just below the patella with a reflex hammer, which causes a contraction of the quadriceps muscle and a brief extension of the knee joint. This reflex involves the L2-L4 nerve roots and the femoral nerve. The abdominal reflex is a type of reflex that is elicited by stroking or tapping the skin of the abdomen. When the skin of the abdomen is stimulated, the muscles of the abdominal wall contract, causing a slight movement of the belly button towards the area being stimulated. The knee jerk, also known as the patellar reflex, and the ankle jerk, also known as the Achilles reflex, are both examples of deep reflexes.