Which of the following statements regarding the trachea and main bronchi is correct?

Which intrinsic laryngeal muscle is primarily responsible for abducting the vocal folds to open the glottis during inspiration?

During a laryngeal exam, gentle contact with the laryngeal (posterior) surface of the epiglottis triggers a strong cough reflex. Which nerve branch carries the sensory input responsible for this response?

Which intrinsic laryngeal muscle originates on the posterior surface of the cricoid cartilage and inserts into the muscular process of the arytenoid cartilage?

Which of the following structures pass through the hilum of the lung?

At which level of the bronchial tree does cartilage disappear, leaving the airway supported primarily by smooth muscle?

Which statement about the anatomy of the nasal cavity is correct?

Which intrinsic laryngeal muscle is the primary abductor of the vocal folds, and what is its clinical significance?

During laryngoscopy, a student is asked to identify the arytenoid cartilages. Where are these cartilages located within the larynx?

Which of the following statements regarding pneumocytes and pulmonary surfactant is correct?