sneeze

Physiology

Mechanism of Cough and Sneeze

Receptors Extrathoracic: nose, oropharynx, larynx, upper trachea Intrathoracic: rapidly adapting irritant receptors in epithelium of lower trachea and large central bronchi Other locations: tympanic membrane, diaphragm, stomach Cough Reflex: Cough is an expulsive reflex that protects the lungs and respiratory passage from foreign bodies. Causes of cough: Irritants-smokes, fumes, dusts, etc. Diseased conditions like COPD, […]

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