Final answer:
The larynx, trachea, bronchi, and bronchioles are parts of the lower respiratory tract, which conducts air to the lungs where gas exchange occurs in the alveoli.
Step-by-step explanation:
The larynx, trachea, bronchi, and bronchioles all make up part of the lower respiratory tract. The lower respiratory tract includes all the structures that are involved in the conduction of air to the areas where gas exchange occurs, namely the lungs.
Within the lungs, the gas exchange takes place in the alveoli, which are the small air sacs surrounded by capillaries. The larynx, also known as the voice box, is part of the lower respiratory tract, below the upper respiratory tract which includes the nasal cavity and the pharynx.
Anatomy of the Lower Respiratory System
The lower respiratory system includes the larynx (voice box) and extends down from the windpipe (trachea) which divides into the left and right bronchi as it enters the lungs.
The bronchi further branch into smaller tubes called bronchioles, which terminate in the alveolar sacs comprised of alveoli - the site of gas exchange.
In conclusion, the correct answer to the student's question is: c. lower respiratory tract.