1. Respiratory system

2. Respiratory System Function: Bringing Oxygen into the body, and removing carbon dioxide and water vapor.

3. Respiratory System What gases are in our atmosphere? 78% Nitrogen 21% Oxygen 1% Argon

4. Respiratory System What is the job of the nose?: Cilia (small hairs) filter out dirt Moistens and warms the air you breathe

5. This tissue lines the trachea and upper respiratory tract, and is responsible for sweeping debris out of your lungs, up your wind pipe, and into the back of your throat where you’ll either a) cough it out or b) swallow it.

6. Respiratory System Pharynx Part of both respiratory & digestive systems Aids in swallowing Houses the tonsils

7. Tonsils

8. Epiglottis

9. Larynx Generates sound Contains vocal chords Open for singing, closed for talking vocal chords video vocal chords video

10. Trachea

11. Tracheotomy

12. Bronchi/bronchioles

13. Smallest Part of Lung= Alveoli Alveoli: air sacks where gas is exchanged Surface area of a tennis court

14. Nose, pharynx, larynx, trachea, bronchi, bronchioles, lungs Nose Pharynx Trachea Larynx Lung Bronchi Bronchioles

15. Respiratory System Diaphragm: o Dome shaped muscle o Located at base of rib cage

16. Respiratory System Inhalation: o Rib muscles and diaphragm contract o Rib cage expands o Lung volume increases o Air pressure in lungs decreases o Air flows into lungs

17. Respiratory System Exhalation: o Rib muscles/diaphragm relax o Rib cage becomes smaller o Air pressure in lungs increases o Air flows out of lungs

18. Oxygen and Carbon Dioxide Exchanged in the lungs through: Diffusion The process by which materials move from an area of: o High concentration to an area of low concentration

19. Asthma

20. Lung Cancer

21. Non-smoker vs. smoker http://www.youtube.com/watch?v=yskYG-EVlBY