Anatomy of the Respiratory System
This is the tube that connects the throat to the lungs.
What is the trachea?
Air first enters the body through these openings.
What are the nose or mouth?
This gas is inhaled and used by the body for cellular respiration.
What is oxygen?
This common respiratory condition is caused by inflammation of the airways, leading to difficulty breathing.
What is asthma?
The right lung is slightly larger than the left because this organ takes up space.
What is the heart?
These are the tiny air sacs in the lungs where gas exchange occurs.
What are alveoli?
Air passes through this structure after the nose and before the trachea.
What is the pharynx?
This gas is exhaled as a waste product of respiration.
What is carbon dioxide?
This condition occurs when the alveoli are damaged, reducing the surface area for gas exchange.
What is emphysema?
On average, this many breaths are taken per minute by an adult at rest.
What is 12 to 16?
This dome-shaped muscle helps the lungs expand and contract during breathing.
What is the diaphragm?
This cartilage-lined structure, also known as the voice box, sits at the top of the trachea.
What is the larynx?
This term describes the exchange of gases between the alveoli and the blood.
What is diffusion?
This is a bacterial or viral infection that inflames the lungs and can lead to fluid buildup.
What is pneumonia?
Hiccups are caused by involuntary contractions of this muscle.
What is the diaphragm?
This structure prevents food from entering the trachea when swallowing.
What is the epiglottis?
Air flows from the bronchi into smaller branches called these.
What are bronchioles?
This part of the respiratory system filters, warms, and moistens incoming air.
What is the nasal cavity?
This chronic condition is caused by smoking and leads to reduced lung function over time.
What is chronic obstructive pulmonary disease (COPD)?
This reflex clears the respiratory system by forcefully expelling air.
What is a cough?
These branches from the trachea lead air into the lungs.
What are the bronchi?
The alveoli are surrounded by these tiny blood vessels where gas exchange takes place.
What are capillaries?
This process describes the movement of air into and out of the lungs.
What is ventilation?
This condition occurs when air escapes into the space between the lung and chest wall, causing the lung to collapse.
What is a pneumothorax?
This gas makes up the majority of the air we breathe but is not used in respiration.
What is nitrogen?