The document summarizes the human respiratory system and the process of gas exchange. It describes the main parts of the respiratory system including the nose, trachea, alveoli, and bronchioles. It explains that inhalation is driven by the contraction of the diaphragm which expands the lungs and pulls air in, while exhalation occurs when the diaphragm relaxes and the lungs deflate, pushing air out. The document also notes that oxygen is needed to produce energy in cells through burning fuels, while carbon dioxide is a colorless and odorless gas produced by burning carbon that is exhaled from the lungs.

1. Respiratory System
And Gas Exchange
by: H. Shady H. Sugeng

2. Respiratory System
Respiratory system is a is the set of organs that helps a person to
breathe and exchange gases with environment.

3. Parts of Respiratory System
Nose
Trachea
Alveoli
Bronchioles
Diaphragm

4. Inhalation
inhəˈlāSH(ə)n
noun
“The process or action of
inhaling or breathing in
gases”

5. Process of Inhalation
Diaphragm
muscle
contracts
Lungs
expand
Air
pulled in

6. Exhalation
ˌeks(h)əˈlāSHən/
noun
“The process or action of
exhaling gases through out
mouth or nose”

7. Process of Exhalation
Diaphragm
muscle
relaxes
Lungs
deflate
Air
pulled
out

8. Why do we
need oxygen
to breath?

9. “we breath OXYGEN because it
is needed to burn the fuel
(sugars and fatty acids) in
our cells to produce energy.

10. What is
carbon
dioxide?

11. Carbon Dioxide
Carbon dioxide is a colourless & odourless gas produced
by burning carbon and organic compounds. It is
naturally present in air and is absorbed by plants in
photosynthesis.

12. The blood gives off CO2 and take in O2. The O2 travels
away from the lungs in the oxygenated capillary. The
CO2 travels from the alveoli to the bronchiole, to the
trachea and is exhale out the nose.
How gas exchange occurs:

13. thanks!
Any questions?