1. The Respiratory
System
By: Group I

2. Primary Function of
Respiratory System
• The respiratory system supplies
the blood with oxygen so that the
blood can deliver oxygen to all parts
of the body.
• And also removes carbon
dioxide waste that cells
produce.

9. Respiratory System Structure
• Nasal Cavity: Passes air through nose
• Mouth: Passes air through
• Pharynx: The throat. Cone shaped passageway
leading to trachea.
• Trachea: Windpipe. Main tube connecting
nose/mouth to lungs.
• Epiglottis: Flap that covers the entrance to the
trachea.
• Lungs: Main organ of the respiratory
system.

10. Respiratory System Structure
• Bronchi: Two tubes inside of lungs that air passes
through to the bronchioles.
• Bronchioles: Small branching out tubes divided
into alveoli.
• Alveoli: Tiny air sacs that do the oxidation and
the exhale of carbon dioxide.
• Capillaries: Blood vessels that are imbedded in
the walls of the alveoli. While in the capillaries
the blood discharges carbon dioxide into the
alveoli and takes up oxygen from the air in the
alveoli.
• Cilia: Hair like structures that remove dust and
dirt from the air.

11. How the Respiratory System
Works
Air that flows from the mouth or nasal
cavity travels through the pharynx and
moves down to the trachea. Then the air
moves to the bronchi tubes as they enter
the lungs. Once the air gets in the lungs,
the air enters separate branches called
the bronchiole. Carbon dioxide passes
from the blood into the alveoli and is then
exhaled.

12. How the Respiratory System
Works
Once in your lungs Oxygen travels
from your lungs through the bloodstream
to the cells in all parts of your body. Cells
use the oxygen as fuel and give off
carbon dioxide as waste gas.The waste
gas is carried by the bloodstream back to
the lungs to be exhaled.

13. Interesting Facts About the
Respiratory System!!
• About half a liter of water per day is lost
through breathing.
• Yawning brings more oxygen to the lungs.
• Your right lung is larger than your left.
• We breathe 13 pints of air every minute.
• People under 30 take in double the
amount f oxygen in comparison to
someone who's 80 years old.

14. How to keep your
respiratory system healthy
• Try to Avoid:
-Smoking
-Being around a smoker(SecondHand)
-Inhaling other chemicals and drugs.
-Being around dusty or thick polluted
air.
• What to do:
- Exercise
- Eat healthy
- Go to annual doctor checkups

15. Bibliography
• Respiratory System Bibliography
• Meeks, Linda and Heit, Philip, Health and Wellness; Glencoe/
McGraw Hill Publishing, 2003, page 183.
• "Your Lungs and Respiratory System";
www.kidshealth.org/kid/htb
w/lungs; Nemours Foundation; 2009.
• “The Importance of Water- Why it is Essential to Life”;
www.notesapps.unon.org/notesapps/unonbb.nsf
• “Why Do I Yawn?”;
www.kidshealth..org/kid/talk/qa/yawn.html; Nemours
Foundation; 2009.
• “Respiratory System”;
www.t3.pacific.edu/teams/M043106/respiratory.html;
Technology for Teachers; 2006.
• “Body Systems- Respiratory System”;
www.fi.edu/learn/heart/systems/respiration.html; FI; 2009.
http://www.britannica.com/EBchecked/topic/455238/pharynx