Download respitatory system - River Vale Schools

RESPITATORY
SYSTEM
EVERY CHILD STRONGER
EVERY LIFE LONGER!
I'M BREATHING IN WHAT?
• Although we can't see it,
the air we breathe is
made up of several
gases. Oxygen is the
most important for
keeping us alive because
body cells need it for
energy and growth.
Without oxygen, the
body's cells would die.
•
Even if the air
you breathe is
dirty or polluted,
your respiratory
system filters out
foreign matter
and organisms
that enter
through the nose
and mouth.
DO I REALLY HAVE TO BREATHE?!?
The respiratory
system (or
ventilatory system)
is the biological
system that
introduces
respiratory gases to
the body and
performs gas
It's Not Just The Lungs
1. Nose/mouth
2. Trachea
3. Bronchi
4. Bronchioles
5. Alveoli
Nose & Mouth
In the Nose and Mouth- air is breathed in
either or both. The air is then delivered
down the Trachea (windpipe).
Interesting facts only breathe through their
nose!
Bronchi & Bronchioles
After the air travels down the Trachea, it will
eventually either go left or right in the
Bronchi- (the two main air passages)
From the Bronchi- the air is divided into the
Bronchioles, which are the even smaller
air tubes (as thin as a strand of hair)
Lungs and Alveolar Sacs
Within the lungs are the
tiny little sacs at the end
of each Bronchiole called
alveolar sacs or alveoli.
The alveoli are where the
exchange of oxygen and
carbon dioxide takes place
through diffusion.
Once in the bloodstream,
oxygen gets picked up by
a molecule called
hemoglobin
(pronounced: hee-muhglo-bun) in the red blood
cells. This oxygen-rich
blood then flows back to
the heart, which pumps it
through the arteries to
oxygen-hungry tissues
throughout the body.