Structure A is the _______.

What is the trachea?
These structures in your nose function to trap pathogens.
What are hairs?
The scientific term for breathing.
What is ventilation?
The structure pictured in blue is the ______ ______.

What is the frontal sinus?
The branching of the trachea results in the _______.
The step of ventilation in which pressure inside the lungs increases.
What is expiration? OR What is exhalation?
The structure labeled X is the ________.

What is the diaphragm?
This is where your vocal cords are located.
What is the larynx?
The step of ventilation in which pressure inside the lungs decreases.
What is inspiration? OR What is inhalation?
The lower respiratory tract consists of the bronchial tree (left and right bronchi), trachea, lungs, and _______.
What is the larynx?
This component of the trachea functions to trap particles entering the respiratory system.
What is the mucous membrane?
________ _______ is the term for the amount of air that remains in the lungs at all times.
What is residual volume?
The upper respiratory tract consists of the sinuses, nose, nasal cavity, and _______.
What is the pharynx?
The exact location of gas exchange within the respiratory system.
What is/are the alveolus/alveoli?
The respiratory center that senses concentration of carbon dioxide in the body.
What is the medulla oblongata?