The respiratory reflex is an automatic response that helps regulate breathing. It occurs when the body detects changes in carbon dioxide and oxygen levels in the blood. Specialized sensors in the body, such as those in the carotid arteries and aorta, send signals to the brain to adjust the breathing rate accordingly. This ensures that the body maintains a proper balance of gases for optimal function. When irritants, like smoke or dust, enter the airways, the respiratory reflex triggers protective actions such as coughing or sneezing. These actions help clear the airways and prevent harmful substances from entering the lungs. Overall, the respiratory reflex plays a crucial role in maintaining respiratory health and efficiency.