How Does Air Get into the Lungs?

1
How Does Air Get into the Lungs?

• Breath in through the nose or mouth
• Air flows down the trachea towards the thorax
• The thorax divides and forms the left and right
  main bronchi
• These break up into smaller and smaller bronchi
  and eventually lead to the microscopic alveoli
• http//www.youtube.com/watch?vps64D3Juv5A

2
The Role of the Diaphragm

• The diaphragm contracts and creates a vacuum in
  the space it leaves forcing air in and when the
  air is exhaled it relaxes forcing the air out
• It regulates the amount of air that enters the
  lungs along with the ribs cage, sternum and
  spinal cord
• http//www.rnceus.com/resp/lateral.html

3
Importance of the Diaphragm

• Contracts to allow the lungs to expand and take
  in air
• The diaphragm then relaxes to expel the air out
• It is voluntary/involuntary- you can stop
  yourself from breathing but usually the breathing
  process is involuntary (like blinking)

4
Breathing/Respiration

• Oxygen is the most important element needed in
  the air we breathe.
• People average 20,000 breaths a day
• Respiration is the exchange of Oxygen and Carbon
  Dioxide from the bodys cells. This process keeps
  our cells alive.

5
Bibliography

• 1. Izzo, Dan. The Human Respiratory System.
  Revive Naturally. 2007. 11 Nov. 2009
  http//www.youtube.com/watch?vps64D3Juv5A
• 2. Johnson, D.R. Introductory Anatomy
  Respiratory System University of Leeds. Steve
  Paxton. 11 Nov 2009. http//www.leeds.ac.uk/chb/le
  ctures/anatomy7.html
• 3. Respiratory Function RnCeus. 2006. 11 Nov
  2009. http//www.rnceus.com/resp/lateral.html
• 4. Rauch, Daniel Diaphragm and Lungs University
  of Maryland Medical Center. 26 July 2007. 11 Nov
  2009 http//www.umm.edu/imagepages/19380.htm
• 5. Lungs and Respiratory System KidsHealth. 11
  Nov 2009. http//kidshealth.org/parent/general/bod
  y_basics/lungs.html