Transcript The Respiratory System

The Respiratory System
• Why do astronauts
wear space suits and
carry oxygen when they
go out in space?
Why do deep sea divers
take oxygen with them
on a dive?
The Respiratory System Functions
• The respiratory system moves oxygen from
the outside environment into the body.
• It also removes carbon dioxide and water from
the body.
Respiration: What is it?
Respiration is the process by which oxygen and glucose (sugar) go through a
chemical reaction inside cells. The chemical reaction releases energy that the
cell uses.
oxygen + sugar
Energy and
carbon dioxide
Do Now: Describe what is happening in this picture.
Use these terms: lungs, arteries, veins, blood cells,
body cells, heart, oxygen and carbon dioxide. Roar
ticket for best use of science vocabulary.
What is air we breathe made of?
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Air is made up of a mixture of gases.
21% oxygen
78% nitrogen
1 % carbon dioxide, helium and other gases.
• What is air mostly?
Breathing – it is not the same as
respiration
• Breathing is
moving air in and
out of your lungs.
• http://www.broncus.com/p
atients.asp
• one direction
Do Now: Sequence the pathway of air as it
flows from outside the body to the alveoli
As air travels from
outside, it travels
through the nose,
pharynx, larynx,
trachea and
bronchi and
bronchioles to the
alveoli
www.phschool.com
http://www.phschool.com/ats
chool/phsciexp/active_art/res
(pharynx)
http://www.youtube.com/watch?v=yWnlhcqJl
Rk
The alveoli
The alveoli
are tiny air
sacs in the
lungs
Gas Exchange in the Lungs
animation of gas exchange
Inside the Lungs
http://www.dnatube.com/video/6094/GasExchange-in-the-Lungs
The diaphragm
http://www.phschool.com/webcodes10/index.cfm?fuseactio
n=home.gotoWebCode&wcprefix=cbp&wcsuffix=0373
AnatomyofBreathing
http://www.phschool.com/atschool/phsciexp/
active_art/respiratory_system/index.html
http://www.youtube.com/watch?v=0yjLJfz6sa
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