When the deep tendon reflexes are tested, the impulse from tapping the patellar tendon goes to the brain and the brain makes a conscious decision to extend the leg.

Question

Quizplus · Accepted Answer

The impulse from tapping the patellar tendon travels through the sensory neurons to the spinal cord, where a reflex arc triggers an immediate contraction of the quadriceps muscle and extension of the leg, without conscious input from the brain. However, the brain does receive signals from the sensory neurons and can modulate the reflex if necessary.

When the Deep Tendon Reflexes Are Tested, the Impulse from Tapping