Field Internship Student Data Acquisition Project. (FISDAP) Airway Practice Exam

What is the sequence of structures that air passes through during ventilation from the atmosphere?

1. Nose, pharynx, trachea, bronchi, alveoli

2. Atmosphere, nose, pharynx, larynx, trachea, bronchi, alveoli

3. Nose, mouth, larynx, bronchi, bronchioles, alveoli

4. Atmosphere, mouth, trachea, bronchi, alveoli

The correct answer is: Atmosphere, nose, pharynx, larynx, trachea, bronchi, alveoli

The correct answer outlines the proper sequence of structures that air passes through as it moves from the atmosphere to the alveoli in the lungs during ventilation. It starts with the atmosphere, where air enters the respiratory system. From there, it travels through the nose, which is a crucial entry point that filters, warms, and humidifies the air. The next structure is the pharynx, a common passageway for both air and food, which directs the air towards the larynx. The larynx, often referred to as the voice box, plays an important role in protecting the airway during swallowing and also helps in phonation. After the larynx, the air continues into the trachea, a tube that serves as a major airway leading to the bronchi. The trachea divides into the right and left bronchi, which branch off into smaller bronchi and then into bronchioles, eventually reaching the alveoli. The alveoli are the tiny air sacs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled. The inclusion of all the major structures in the correct sequence emphasizes the importance of each part of the respiratory tract in facilitating effective ventilation and gas exchange. Hence, this sequence accurately