Anatomy
What are these large, spongy organs that take in oxygen and release carbon dioxide?
Lungs
Which gas do we inhale?
Oxygen
Where does air enter?
nose
This disorder is inflammation of the bronchi, usually causing coughing and mucus.
Bronchitis
How many lungs do humans have?
two
What structure connects the throat to the lungs?
Trachea
Which gas do we exhale?
Carbon dioxide
What warms and filters air after the nose?
Nasal cavity
This disease destroys the alveoli, making it hard to breathe and absorb oxygen.
Emphysema
Which lung is slightly smaller to make room for the heart?
Left lung
Which muscle contracts to help us breathe in?
Diaphragm
What carries oxygen in red blood cells?
Hemoglobin
What flap covers the trachea when swallowing?
Epiglottis
This condition causes sudden airway tightening, swelling, and difficulty breathing.
Asthma
About how many breaths does an average person take per day?
Around 20,000
What tiny air sacs allow gas exchange?
Alveoli
What process brings oxygen into the body?
Inhalation
What part of the throat leads to the trachea?
Pharynx
This illness causes fluid to build up in the alveoli, making breathing painful.
Pneumonia
What percent of the lungs is made of air not solid tissue?
About 75%
Name the two main branches of the trachea.
Bronchi
What process removes carbon dioxide from the blood?
Exhalation
List the full path of air into the body.
Nose → Pharynx → Larynx → Trachea → Bronchi → Bronchioles → Alveoli
This chronic disease is often caused by smoking and makes it hard to exhale air from the lungs.
Chronic Obstructive Pulmonary Disease (COPD)
True or False: Lungs can float in water because they contain air.
True