NEET PG DENTAL EXAM

Detailed explanation-1: -Sneezing is a vital respiratory reflex frequently associated with allergic rhinitis and viral respiratory infections. However, its neural circuit remains largely unknown.

Detailed explanation-2: -Blinking reflex: blinking the eyes when they are touched or when a sudden bright light appears. Cough reflex: coughing when the airway is stimulated. Gag reflex: gagging when the throat or back of the mouth is stimulated. Sneeze reflex: sneezing when the nasal passages are irritated.

Detailed explanation-3: -The sneezing reflex may be divided in two phases. The first is a nasal or sensitive phase, following stimulation of the nasal mucosa by chemical or physical irritants. The afferent pathways are through the olfactory and ethmoidal nerves, which converge in the putative “sneezing centre” in the medulla.