Respiratory
System
What is it?
Main Parts of it
In Your PODS
● Come up with 4 things that you know about
the Respiratory System (or think you know).
● Come up with 4 questions that you have about
the Respiratory System.
MAIN PURPOSE OF
RESPIRATORY SYSTEM
MAIN PURPOSE OF
RESPIRATORY SYSTEM
Respiration
(Breathing)
* We need oxygen
to survive!!
In Your PODS
1. What happens in our bodies when
we breathe?
What Happens When We
Breathe?
Respiration (Oxygen/CO2
Exchange)
●Take out a piece of notebook paper to
draw on.
●Draw a heart, two
lungs, and a stickman.
● Taking Pulmonary
Circulation a step
further.
Respiration (Oxygen/CO2
Exchange)
In Your POD’s
2. Why do you think our bodies
cough?
Why Do We Cough?
2. Our body’s natural way of clearing
dust and anything else in our
windpipe or lungs.
● We have an automatic “cough reflex”
in our body that detects when it’s
necessary to cough.
● Our “cilia”, tiny little hairs in our
airways, collect dirt. So when they fill
up…. COUGH!!
How Does Coughing Work?
● When your body senses that there is something in
your airway that shouldn't be there, you:
● automatically take a deep breath,
● close your windpipe at the epiglottis momentarily,
● push air against the closed epiglottis with your lung
muscles to build up extra pressure, and
● then open your epiglottis.
● When the epiglottis opens, the high-pressure air
comes out explosively, and the explosion helps force
the matter out of your airways. You can also cough
whenever you want to, whether to clear your throat
or for other reasons.
POD Question
3. Why do we get runny noses?
Why do we sneeze?
Why Runny Noses? Why
Sneezing?
3. It’s another way to protect our airways and to
clean out any irritants. We produce more
mucous to “flush” out the irritants.
● Allergies irritate our mucous membranes and
make us produce an excessive amount.
Sneezing: Also a reflex. Similar to the coughing
reflex where cilia are filled with dirt or particles
in the nose, then ACHOO!!!
POD Question
4. Why is the Respiratory System a
common site of infection?
Why Susceptible To Infections?
4. Because germs can easily enter
through your nose and mouth.
POD Question
5. What requires more oxygen?
Sleeping Or Running A Mile?
WHY?
More Oxygen? Sleeping or Mile Run?
5. Running a mile, because the demand
for oxygen is greater.
POD Question
6. What else
happens in our
bodies when the
demand for
oxygen is
increased? (Hint:
Think about other
systems we’ve
learned about…..)
Demand for Oxygen Increased….?
6. Our heart needs to pump more
often in order to pump out more
blood to the muscles so that they
can get proper oxygen to meet the
increased demand.
* Also, our brain prioritizes where
blood
should go.
POD Question
7. Come up with a list of 4-5
activities where respiration
(breathing) is essential (very
important) to the activity.
Activities of
Respiration
Activities of Respiration
Activities of Respiration
Activities of Respiration
Take out your Respiratory
Diagram
The Flow of Air
• Air enters through the NOSE and MOUTH
• Lined with mucous membranes
• Fine hairs called cilia trap dirt
From the nose and mouth to
the…..
• Throat
• Has two passageways
• One for air
• One for food (down to digestive
system)
• “It went down the wrong tube!”……
Throat to the….
● Epiglottis
● A flap of tissue that closes over the
trachea when you swallow.
Epiglottis to the…………
● Larynx
● Contains the vocal cords
● It grows larger during puberty
● Adam’s Apple
●(***Hum to find where your larynx is).
Larynx to the…..
● Trachea
● Directs air to the lungs.
● Long tube
Trachea to the…..
● Bronchi
● Passages through which air enters the lungs
● You have a left and right “bronchus” because
they are like a “V”
● They go directly into the lungs
Bronchi to the…..
● Lungs
● Oxygen is transferred into the blood
and carbon dioxide is removed from the
blood.
● (Alveoli and capillaries)
Healthy Lungs
Lungs of a Smoker
●On left,
Empysema
●On right,
Lung Cancer
What's in a Cigarette?
There are approximately 600 ingredients in cigarettes. When burned, they create
more than 4,000 chemicals. At least 50 of these chemicals are known to cause
cancer, and many are poisonous.
●Many of these chemicals are also found in consumer products, but these
products have warning labels. While the public is warned about the danger of the
poisons in these products, there is no such warning for the toxins in tobacco
smoke.
●Here are a few of the chemicals in tobacco smoke, and other places they are
found:
●Acetone – found in nail polish remover
●Acetic Acid – an ingredient in hair dye
●Ammonia – a common household cleaner
●Arsenic – used in rat poison
●Benzene – found in rubber cement
●Butane – used in lighter fluid
●Cadmium – active component in battery acid
●Carbon Monoxide – released in car exhaust fumes
●Formaldehyde – embalming fluid
●Hexamine – found in barbecue lighter fluid
●Lead – used in batteries
●Napthalene – an ingredient in moth balls
●Methanol – a main component in rocket fuel
●Nicotine – used as insecticide
●Tar – material for paving roads
●Toluene - used to manufacture paint
Smoker vs. Non-Smoker Lungs
Questions??
?
In Your PODS
● Partner up with one person within your POD
● Act as if they have never heard anything about
how blood gets oxygen and how the body gets
out bad carbon dioxide.
● Draw for them on a napkin (or on notebook
paper) the entire process of Oxygen/CO2
exchange. Label parts. Try not to use your
notes!!
● Then, you pretend that they didn’t teach you
anything and draw and teach the same thing to
them.
Respiratory Lab
What does smoking ONE cigarette do to your
lungs?
LET’S FIND OUT!!