The Nervous System and Reflexes: Blinking & Sneezing Explained

Yes, the nervous system controls both blinking and sneezing.

- Blinking is controlled by the autonomic nervous system. This system regulates unconscious bodily functions like heart rate, digestion, and breathing. When the eyes become dry or irritated, the autonomic nervous system sends a signal to the muscles around the eyes to close them. This reflex helps to protect the eyes from damage.

- Sneezing is a reflex that is also controlled by the autonomic nervous system. It is triggered when the nasal passages become irritated by allergens, dust, or other particles. When this happens, the autonomic nervous system sends a signal to the diaphragm and the muscles of the chest to contract. This creates a powerful airflow that expels the irritant from the nose.