Pathway of Air
Both air and food go through the...
Pharynx
When you inhale where does the air go?
In!
When you exhale where does the air go?
Out!
What is the trachea surrounded by to keep it open?
Rings of cartilage
Does the pressure in the thoracic cavity increase of decrease?
Decrease!
When you exhale the volume in your thoracic cavity?
decreases
Air enters the ... through tubes called ...
lungs, bronchi
What happens to the volume in your thoracic cavity when you inhale?
It increases!
As you exhale what happens to the pressure in your thoracic cavity?
It increases
What are the smalller tubes called that the bronchi branch into?
bronchioles
What do the intercostals do?
They contract and expand space in the chest.
As you exhale your intercostals...
relax and shrink in space
What does blood take from the alveoli and drop off in the alveoli?
Oxygen, Carbon dioxide
What happens to the diaphragm when inhaling?
It contracts, lowers, and increases the space in your chest.
When you exhale your diaphragm...
Relaxes and moves up