Transcript Image of the Respiratory System

Essential Questions
•What are the major systems
of the human body?
•How does the Respiratory
System help my body
function?
•What are the major parts of
the Respiratory System?
What does the Respiratory
System Do?
 You need oxygen to stay alive.
Oxygen gives your body energy.
 The Respiratory System is a
group of organs and tissues
that exchange oxygen and
carbon dioxide between your
body and the environment.
What does the Respiratory
System Do?
 When you breathe in, your body gets
oxygen. When you breathe out, you
breathe out carbon dioxide- waste
from the body.
The Respiratory System
 Your body uses its
respiratory system to get
oxygen from the air.
 The major parts of your
respiratory system include:




nose and mouth,
your trachea,
your two lungs,
and diaphragm.
The Respiratory System
• Air enters the body through the nose
and mouth then travels down the trachea
(the “windpipe,” or what connects your
pharynx to your lungs)
• The trachea branches into two tubes
called bronchi, which lead to the lungs.
• At the end of the bronchi are tiny tubes
called alveoli, small air sacs.
• Carbon dioxide and oxygen are
exchanged in the alveoli and the oxygen
rich blood enters the body through the
pulmonary veins.
The Diaphragm
•The diaphragm is the muscle
that causes you to breathe.
When you breathe in, your
diaphragm expands (like a
balloon). When you breathe
out, your diaphragm contracts,
or deflates.
•hiccups are involuntary
contractions of the diaphragm
Image of the Respiratory System
What’s the Purpose?
As the blood passes through
the lungs, it picks up the
oxygen and takes it to the
cells of the body, where the
blood then picks up carbon
dioxide and returns it to the
lungs.
Let’s Review
• The major parts of the
respiratory system
include the nose/mouth,
trachea, the lungs, and the
______________.
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A. liver
B. diaphragm
C. esophagus
D. pancreas
Let’s Review
• When you breathe in air,
you bring oxygen into
your lungs and blow out:
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A. hydrogen
B. carbon monoxide
C. oxygen
D. carbon dioxide
Let’s Review
• When you inhale, your
lungs:
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A. inflate
B. turn purple
C. make you sneeze
D. deflate
Let’s Review
• What is the name of the
tiny air sacs located in
your lungs?
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A. Bronchioles
B. Ravioli
C. Alveoli
D. Bronx
Let’s Review
• The trachea is also
called the _________.
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A. lung
B. bronchius
C. diaphragm
D. windpipe
Let’s Review
• The lungs bring ______
into the body, and
eliminate _______ from
the body.
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A. oxygen, carbon dioxide
B. helium, nitrogen
C. carbon dioxide, oxygen
D. ketchup, mustard
Let’s Review
• What is the main
function of the
respiratory system?
• A. to break food down
• B. supply the blood with oxygen
• C. circulate the blood
Let’s Review
• Which part of the body
is not used for the
respiratory system to
work?
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A. mouth
B. nose
C. small intestine
D. diaphragm