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What gasses do we breathe in and out?
We breathe in oxygen and breathe out carbon dioxide.
What are the short branches located at the lower end of the trachea that carry air into the lungs?
They are the bronchi.
What are the tiny tubes inside the lungs that lead air into the air sacs?
The bronchioles.
Name the two intestines.
The large intestine and the small intestine.
Where in the body does most of the absorbtion of nutrients take place?
In the small intestine.
Where does digestion start?
It starts in the mouth.
How many lungs do we have?
We have two lungs.
Where does food go after it is chewed and swallowed?
It goes to the esophagus.
What is the purpose of saliva?
Saliva makes food easier to chew and swallow.
After nutrients are absorbed, how are they delivered to the rest of the body?
Nutrients are delivered through the bloodstream.
How does air enter the respiratory system?
Air enteres through the nose and mouth.
Where does gas exchange happen?
Gas exchange happens in the alveoli.
What is the main tube that carries air to your lungs?
The trachea.
What happens if food goes down the trachea instead of the esophagus?
You could choke.
What is produced by the liver to help digestion?
Bile is produced in the liver.
What long tube connects the mouth to the stomach?
The oesophagus connects the mouth to the stomach.
