What is the role of the brain in reflex action?

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Reflex Action**: Reflex actions are involuntary responses to stimuli that occur without conscious thought. They are automatic and happen quickly to protect the body from harm.

2. **Role of Sensory Nerves**: When a stimulus occurs, it is detected by sensory nerves located in our sense organs. These nerves are responsible for sensing external changes and sending signals to the nervous system.

3. **Transmission to the Spinal Cord**: The sensory nerves carry the signal or impulse from the site of the stimulus to the spinal cord. This is a crucial step in the reflex action pathway.

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