Download How Does Your Body Take in Oxygen

Student Name_____________________________ Date_____________________
How Does Your Body Take in Oxygen? – Level Prompt: This passage is called How Does Your
Five- Expository
Body Take in Oxygen? It tells about how we
breathe.
Preparing Air for Your Lungs
About one-fifth of the air that you breathe in is
smallest tubes lead to clusters of tiny pouches
a gas called oxygen. Your cells must have
called air sacs. A net of tiny blood vessels
oxygen to do their work. Without oxygen, cells
surrounds each air sac. Inhaled air, which is rich
will die – some within 3-5 minutes. When you
in oxygen, enters the air sacs. At this moment, the
breathe in, your respiratory system brings air
blood in the vessels around the air sacs contains a
containing oxygen into your body. The cells in
lot of carbon dioxide, which the blood has picked
your body use the oxygen, and as they work, the
up from body cells. That blood contains little
cells produce carbon dioxide. This gas leaves
oxygen. An air exchange quickly takes place.
your body as waste when you breathe out.
Oxygen passes from the air sacs into the blood
The respiratory system includes your nose,
vessels. The blood now has oxygen to deliver to
your lungs, and the tubes that connect them. Air
the body cells. At the same time that oxygen
enters the body through the nose, which has the
passes out of the air sacs, carbon dioxide passes
job of getting the air ready for the lungs. If air is
from the blood vessels into the air sacs. The
very cold, dry, or dirty it could damage your
carbon dioxide leaves your body when you
lungs. Your nose warms, moistens, and cleans the exhale.
air that you breathe in. The blood supply and
(343 words)
mucus in your nose keeps it warm and moist. The
hairs in your nose capture the dust from the air.
After the air is warmed, moistened, and
cleaned it goes to the throat and down the trachea
Number of Total Miscues
(Total Accuracy): ____________________
or windpipe. The trachea divides into two
bronchial tubes, each of which goes into a lung.
Inside the Lung
Inside the lungs, the bronchial tubes divide into
smaller and smaller tubes. Look at the picture
Total
Accuracy
0-8 miscue ____Independent
9-36 miscues ____Instructional
37+ miscues ____Frustration
Rate 343 x 60/ ____ seconds =
_____ WPM
above to help you visualize this description. The
Division of Learning Services
Fall 2007
COMPREHENSION
How Does Your Body Take in Oxygen? – Five - Expository
1.
What is one of the main ideas of what you have read thus far?
Implicit: that oxygen is needed by cells or that the air is cleaned and moistened by your nose before it
enters the lungs or how air is exchanged inside your lungs
2.
Why do your cells need oxygen?
Explicit: to do their work; they need it to live
3.
When the cells use the oxygen, what other gas do they make?
Explicit: carbon dioxide
4.
How is the air that you breathe cleaned and moistened?
Explicit: nose hairs clean it, and blood supply and/or mucous warms and moistens it.
5.
Why can’t you hold your breath for 20 minutes?
Implicit: your body would force you to breathe to keep your cells alive
6.
Explain how air goes from your nose to your lungs.
Explicit: it goes to your throat and down the windpipe or trachea through the bronchial tubes to the
lungs. (If the student omits throat the answer is still correct, but the student must describe the air going
down the windpipe or trachea and through the bronchial tubes.)
7.
Why are there two bronchial tubes?
Implicit: because there are two lungs and so a tube is connected to each one
8.
Why is it important that tiny blood vessels surround each air sac?
Implicit: so that the oxygen can enter the blood stream and carbon dioxide can be released from the
blood into the lungs to exhale; or so the air exchange (carbon dioxide for oxygen) can take place.
Number Correct Explicit: ______
Total Reading
Word Accuracy
Independent
Independent
Independent
Instructional
Instructional
Instructional
Frustration
Frustration
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+
Comprehension
Independent
Instructional
Frustration
Independent
Instructional
Frustration
Independent
Instructional
Division of Learning Services
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Reading Level
Independent
Instructional
Frustration
Instructional
Instructional
Frustration
Frustration
Frustration
Number Correct Implicit: ______
Total
______
____________
Independent: 8 correct
____________
Instructional: 6-7 correct
____________
Frustration: 0-5 correct
Fall 2007