The Respiratory System
I.
Fill in the blanks.
A. Respiration is __________________________________ and automatic.
B. Breathing allows _______________________________ to enter the lungs and
_______________________ to exit.
C. Oxygen is transported through the blood to your ______________________________.
D. When we breathe in, our______________________________ expands allowing air to
enter the lungs.
II.
Fill the blanks to show the flow of air.
Nasal passage -> ______________________ ->_________________________ >______________________
->_____________________->____________________->
alveoli
III.
Fill in the chart by the action of each organ.
Inhalation
Intercoastal muscles
Diaphragm
Size of the thorax
Where does the air go?
Exhalation
IV.
The diaphragm is an important muscle for respiration. What would happen if the
diaphragm stopped working? Explain.
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________.
V.
Write the name of each part of the respiratory system based on the descriptions.
Then, draw it.
The tubes that
enter the lungs.
The organ where
air enter the
body.
The small
clustered sacs
where gas
Exchange
happens
A large tube that
directs art to the
bronchi
The organs that
fill with air
during inhalation