Transcript Respiratory System - University of St. Thomas

The
Respiratory
System
Keynote Presentation
by Jamie York
True
or
False
You can live longer without
food and water than you can
without oxygen?
True
You can only live a few minutes if your
body doesn’t have oxygen!
Why?
Your body cannot store oxygen
like it can store food.
* You must provide your body
with fresh oxygen all the time!
Body Systems
• Skeletal
• Muscular
• Circulatory
• Digestive
• Respiratory
• Excretory
• Endocrine
• Nervous
You will learn:
• The main parts of the Respiratory System
• The jobs of the Respiratory System
• What breathing and Respiration are all
about
• Ways you can prevent damage to your
Respiratory System
Who “nose” the parts
of the Respiratory
System?
NOTE A: Each air sac is covered with tiny
blood vessels (CAPILLARIES). Oxygen
moves from air sacs into capillaries. Carbon
dioxide moves in the opposite direction. Red
blood cells transport these gases to and
from all the cells in our body.
NOTE B: If too much mucus is made then the
passage way gets smaller and air has a harder tim
to get through. This can happen in chronic bronchi
and asthma.
NOTE C: Air flows from bronchioles into millions
of tiny air sacs called ALVEOLI. The sacs look
like bunches of grapes at the end of the bronchial
tubes. The alveoli are where the oxygen from the
air enters your blood, and the carbon dioxide
from your body goes into the air. Alveoli are very
tiny, but you have a lot of them in your lungs. In
fact, you have 300,000,000 alveoli in each lung.
That's six hundred million in total - and your body
needs them all to get enough oxygen in your
blood!
The Respiratory
System has two
main jobs:
• Provide oxygen for the body
• Remove gaseous wastes from the
body
The Circulatory and Respiratory
Systems work together to
get the jobs done!
Can you explain how?
Take a deep breath and think about
it.
Let’s break down
the process:
•
•
•
•
•
Breathing - oxygen is inhaled
Circulation - oxygen is carried to the cells
Respiration - oxygen and sugar combine in a chemical reaction
to release ENERGY
Circulation - carbon dioxide is carried to the lungs
Breathing - carbon dioxide is exhaled
What is respiration?
After all, the system has been named
for it!
Respiration is...
A process that takes place in the cells of your body.
Oxygen combines with sugar, and ENERGY is released!
Carbon dioxide and water are produced as wastes.
YAWN!
“That’s too much
information!
Why do I need to
understand that?”
You need to understand that...
Your brain controls
breathing by sensing
the amount of carbon
dioxide in your body.
For example:
Yawning is your bodies way of releasing extra carbon
dioxide.
Think about this...
Why do you breath
harder when you
run?
Your muscles need more
oxygen to work hard.
Breathing harder
releases carbon dioxide
and brings in
more oxygen quickly!
What if we run out
of oxygen?!
If we care for
the plant life
in our
environment,
we won’t!
* Plants release the oxygen we
need through photosynthesis,
and we release the carbon
dioxide they need when we
breath.
What can harm the
Respiratory
System?
• Bacteria & Viruses
• Asthma & Allergies
• Polluted & Smoke-filled air
* Respiratory System problems can become serious
quickly. YOU NEED OXYGEN TO SURVIVE!
Keep your
Respiratory System
healthy!
• Exercise regularly
• Avoid polluted air
• NEVER smoke!