Anatomy & Airway
Air usually enters the respiratory system through the mouth or this other facial feature.
What is the nose?
This is the invisible gas that humans must breathe in to stay alive
What is the oxygen?
Humans breathe in carbon dioxide and breathe out oxygen
What is Fiction?(It is the opposite—we breathe in oxygen and breathe out carbon dioxide).
Under a microscope, the tiny air pockets in your lungs look like a bunch of this sweet, purple or green fruit.
What are grapes?
This bright red liquid acts like a delivery train, traveling all through your body to drop off oxygen.
What is the Blood?
These millions of tiny, grape-like air sacs are where the actual exchange of oxygen and carbon dioxide takes place.
What are alveoli?
This is the waste gas that humans breathe out
What is carbon dioxide?
Your lungs are filled with water when you are healthy
What is Fiction? (Healthy lungs are filled with air, not water).
Your airways are lined with millions of tiny, microscopic hairs that act like these household tools to sweep out dust and dirt.
What are brooms (or brushes)?
This organ acts like a powerful pump, constantly pushing your blood to the lungs to get oxygen and then to the rest of the body.
What is the heart?
This flap of cartilage sits at the base of the tongue and prevents food from entering the windpipe during swallowing.
What is the epiglottis?
This large, dome-shaped muscle under your lungs moves down when you inhale.
What is the diaphragm?
Smoking cigarettes is good for your lungs and helps you breathe better.
What is Fiction? (Smoking damages your lungs and makes it harder to breathe)
Even though you can't see them without a microscope, your lungs actually contain hundreds of millions of these tiny air sacs.
What are millions?
When you take a deep breath in, your blood grabs this healthy gas from the air to keep you alive.
What is oxygen?
The right lung is divided into three of these sections, while the left lung only has two.
What are lobes?
These bones form a protective cage around your heart and lungs.
What is the rib cage?
Regular exercise, like running or swimming, helps make your lungs stronger.
What is Fact? (Exercise strengthens the muscles used for breathing)
Inside your body, microscopic oxygen molecules hitch a ride on these tiny red circles that travel through your veins.
What are blood cells?
This is the waste gas your body needs to get rid of, which your blood carries back to the lungs so you can breathe it out.
What is carbon dioxide?
This double-layered membrane surrounds the lungs and lines the chest cavity, reducing friction during breathing.
What is the pleura (or pleural membrane)?
This sticky substance lines your nasal passages to trap dirt and germs from the air.
What is mucus?
Your ribs act like a cage to protect your lungs from getting hurt
What is Fact? (The rib cage protects your heart and lungs from injury).
The walls of your microscopic air sacs are incredibly thin so that this invisible gas can easily pass out of the lungs and into your body.
What is oxygen?
Blood travels through your body inside these long, hollow tubes that act like microscopic pipes.