As a paramedic or EMT, your first responsibility in patient care is to secure a patent airway. Whether you are placing an EOA to elevate the tongue of an overdosed patient, suctioning the oropharynx of a trauma code, or inserting an endotracheal tube for a patient who has stopped breathing, a thorough understanding of the structures that make up the respiratory tract is a must. Here is a brief review of airway anatomy to ensure you're ready for the next respiratory emergency.