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Respiratory System Test
PLEASE ANSWER ALL QUESTIONS WITH A FULL AND COMPLETE
SENTENCE.
1. Match the terms with the correct definition. Please write in the correct letter – do not
draw lines.
_____ Trachea
_____ Bronchioles
_____ Capillaries
_____ Alveoli
_____ Bronchus
a. Tiny, mesh like covering of blood vessels.
b. The tube also known as your wind pipe.
c. Two tubes that carry oxygen in and out of your lungs.
d. Branch-like tubes that carry oxygen to the alveoli.
e. Microscopic air sacs that fill up with oxygen and carbon
dioxide.
2. Why is the wall of an alveolus so thin?
3. What is the function of capillaries?
4. Why is one of your lungs bigger than the other?
5. Why do we have a ribcage?
6. Number the order of the steps, from 1-8, of oxygen entering your bloodstream
(inhaling).
_____The oxygen goes through the wall of the alveoli.
_____Your diaphragm pulls down.
_____The oxygen travels into the bronchi.
_____The oxygen enters the capillaries.
_____The oxygen travels down the bronchioles.
_____The oxygen fills up the alveoli.
_____The oxygen is carried to all the parts of the body through the bloodstream.
_____Oxygen is pulled down your trachea.
7.Number the order of steps oxygen takes when you inhale (breathe in) with 1 being the
first step and 11 the last.
_____Your diaphragm pulls down and oxygen enters through your nose/mouth.
_____Your blood flows back to the capillaries that surround the alveoli and
transfers the CO2 through the thin membranes back into the alveoli.
_____The oxygen enters the tiny air sacs called alveoli at the end of your bronchioles.
_____The oxygen splits through the two tubes of your bronchi and enters each lung.
_____The oxygen is now in your bloodstream.
_____The oxygen travels down the branch-like tubes of your bronchioles.
_____The oxygen passes through the thin membranes of the alveoli and capillaries.
_____Your heart pumps the blood around your body, carrying the oxygen to all the
cells in your body.
_____The oxygen goes down your trachea (windpipe).
_____Your blood gives the oxygen to the cells and picks up the CO2 (waste) from
them.
_____The CO2 in your alveoli leaves your body by your diaphragm pushing up and
exhaling (reverse steps of inhaling).
8. What happens when you have an asthma attack?
9. True or False-please write out the word completely
____
____
____
____
____
When you inhale, your diaphragm pulls down.
When you exhale, your diaphragm pulls down.
The walls of alveoli are thin enough for oxygen to pass through.
There are muscles in your trachea that push the air down to your bronchi.
Bronchi are small tubes that carry oxygen down to the alveoli
10. Draw and label your Respiratory System.