Question

In reflex action, the reflex arc is formed by

• A. Brain $\to$ spinal cord $\to$ muscles
• B. Receptor $\to$ spinal cord $\to$ muscles
• C. Muscle $\to$ receptor $\to$ brain
• D. Muscles $\to$ spinal cord $\to$ receptor

Answer 1

The correct option is B Receptor $\to$ spinal cord $\to$ muscles

In reflex actions, a reflex arc is formed by impulses from the receptor reaching the spinal cord and the appropriate reflex impulse then being sent to the muscles by the spinal cord. The impulse is not sent to the brain, to reduce response time.