Download The Respiratory System - Fall River Public Schools

On Task
_______
100% Effort _______
Pen/Pencil
Physician’s Name: _________________________________ Class: 8__ Date: ______________
On time
_______
Mrs. Bouchard – 8th Grade Science
Academic
Language _______
Work Hard. Get Smart.
The Respiratory System
Total:
/4
1. The respiratory system ________________________________________________________.
•
It _____________________ from the outside environment ___________________________.
•
It also _____________________________
and water vapor (aka gas) ___________________.
2. Your cells ___________________ to break down food to ____________________.
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This is _____________________! That’s why it’s called the respiratory system!
2. Respiration also _______________________ and water, which your cells ________________.
3. Class-Ending Think-Pair-Share
Think (1)
Pair (2)
The Respiratory System: Reading Activity!
DIRECTIONS: Read below with your partner, switching who is the
reader and who is the summarizer each paragraph. The cloud
should contain the MAIN IDEA of each paragraph.
Breathe in. Breathe out. No, you’re not trying to stay calm. You’re
practicing using your respiratory system! Your respiratory system is
responsible for exchanging gases with the outside environment.
Oxygen comes in, and helps your cells make energy through
respiration. Carbon dioxide and water are breathed out.
So, how does the air actually travel through your body? Air has to
pass through many different organs and passageways when you
breathe. As air enters your body, it passes through the nose,
pharynx, trachea, bronchi, lungs and finally into your alveoli.
Air enters the body through the nose. Once it enters the nose, it
moves into spaces inside called nasal cavities. Some cells in the
nasal cavities produce mucus, a sticky substance that moistens the
air. You’ve seen mucus before – it’s the stuff you see when you blow
your nose!
Your nose is also responsible for getting rid of dangerous materials.
Sticky mucus traps dangerous particles such as dust. Also, the cells
that line the nasal cavities also have cilia, which look like small hairs.
Cilia sweep the mucus into the throat, where you swallow it,
allowing stomach acid to destroy anything dangerous.
After the nose, air moves into the pharnyx (fair-inks). The pharynx is
the scientific name for your throat. Both food and air can move
down the pharynx. To make sure you don’t choke when you eat, a
small flap of tissue called the epiglottis
closes, shutting off the respiratory
system. Food moves on to the
esophagus, while air moves on to
the trachea (tray-key-uh).
The trachea is the scientific name for your windpipe. If you pick
your chin up and run your fingers down your throat, you can
actually feel your trachea! It feels like a tube with a bunch of ridges
on it. Just like the nose, the trachea is lined with mucus and cilia.
The cilia in the trachea sweep upward, moving mucus toward the
pharynx, where it can get swallowed. The cilia and mucus continue
the cleaning and moistening of air that started in the nose!
The trachea splits into two shorter tubes called bronchi (bron-key).
The bronchi are passages that move air into the lungs. The left
bronchus (the word for one “bronchi”) enters the left lung, while
the right bronchus enters the right lung. The lungs, as you may
know, are the main organs of the respiratory system. Inside the
lungs, each bronchus splits into smaller and smaller tubes; this
looks like the branches of a tree.
At the end of the smallest tubes are tiny structures called alveoli
(al-vee-oh-lee). These alveoli are tiny sacs of lung tissue that look
like bunches of grapes. Each alveolus (the name for one “aleveoli”)
is surrounded by capillaries – very tiny blood vessels. The blood in
those capillaries picks up the oxygen you’ve breathed in, and carries
it to your whole body! At the same time, the blood drops off carbon
dioxide your cells have made as a waste product, and it leaves the
body the same way oxygen came in!
This diagram shows how the bronchi get smaller
and smaller until you get alveoli at the very ends of
the smallest tubes. This is all within your lungs!
Citation: Some text adapted from
“Life Science,” Prentiss Hall 2005.
This diagram shows how gases are exchanged
in the alveoli. Oxygen (O2) enters the
bloodstream and is carried all over the body.
Carbon dioxide (CO2) leaves the blood so it can
be exhaled and leave the body.
Level 1: Which Part of the System?
1. What is the main job of your respiratory system? ___________________________________
___________________________________________________________________________
2. What is the correct order of the organs of the respiratory system?
Answer by completing the diagram below.
WORD BANK: bronchi, nose, trachea, lungs, pharynx
1
2
3
4
5
3. Which part of the respiratory system is being described?
WORD BANK: bronchi, nose, trachea, lungs, pharynx, alveoli
a. The main organs of the respiratory system.
Within each, a bronchus splits into smaller and smaller tubes.
b. The scientific name for your windpipe. Just like the nose, it’s lined
with mucus and cilia to clean the air that enters your body.
c. Where air enters the body. It has “cavities” filled with mucus that
trap dangerous particles. This cleans the air you breathe!
d. Tiny sacs of lung tissue that look like bunches of grapes. Each one
is surrounded by blood vessels that pick up oxygen to carry it to the
body, or drop off carbon dioxide to be exhaled and leave the body.
e. The scientific name for your throat. Both food and air can enter it,
so it has a flap of tissue that covers the rest of the respiratory system
when you eat so you don’t choke.
f. Two passages that move air into the lungs. Once they enter the lungs,
they split into smaller tubes, like branches of a tree.
Go Check Answer Key #1
Level 2: Short Answer
1. In order, what are the five major structures of the respiratory system?
___________________________________________________________________________
2. How does your nose protect you from harmful particles in the air?
You must USE and EXPLAIN the words mucus and cilia!
___________________________________________________________________________
___________________________________________________________________________
3. If food and air can both go through your pharynx, why don’t you choke when you eat?
___________________________________________________________________________
___________________________________________________________________________
4. How is your trachea similar to your nose? What do they both do to air you breathe?
___________________________________________________________________________
___________________________________________________________________________
5. The image below and to the left shows lungs, bronchi and alveoli. How are they connected?
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
6. The image below and to the right shows what happens in the alveoli. Explain the image!
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
Go Check Answer Key #2
Level 3: Systems Review
1. Which system is being described?
WORD BANK: skeletal system, muscular system, digestive system, respiratory system
a. It breaks down food into tiny molecules, both for
energy and for materials for growth.
b. It exchanges gases between the body and the
outside environment.
c. It allows your body to move, and your organs to
move and work.
d. It protects and supports your body, allows you to
move, makes red blood cells and stores nutrients.
2. Which system does each picture represent?
WORD BANK: skeletal system, muscular system, digestive system, respiratory system
3. Which word is being described?
WORD BANK: joint, smooth muscle, alveoli, esophagus
a. The tiny groups of lung tissue that give oxygen to
your blood.
b. A place in the body where two bones come together,
allowing you to move.
c. I’m a muscular tube that pushes food from the mouth
to the stomach.
d. Involuntary muscles that help your organs work
(like your stomach).
CHECK ANSWER KEY #3!