1. RESPIRATORY
SYSTEM
Prepared by:
MARICARR D. ALEGRE

2. RESPIRATION
• a life process common to
both plants and animals
• There is an exchange of
oxygen and carbon dioxide

3. RESPIRATORY SYSTEM

4. Phases of Respiration
• External Respiration
–Exchange of gases between
the atmosphere and the
blood
• This involves the lungs

5. Phases of Respiration
Internal Respiration
Exchange of gas
between the blood and
the body tissues

6. Breathing
-a mechanical process that helps
get air into and out of the lungs
STAGES
1. INSPIRATION –intake of air
2. EXPIRATION – breathing out
of air

7. PARTS OF THE
RESPIRATORY
• Nasal cavity
• Larynx
• Trachea
• Bronchial tubes
• Lungs (bronchioles and
alveoli)

8. NOSE

9. NOSE
• Serves as the entrance to your nasal
cavity
• Inside the nasal cavities are cilia
which filters the air and trap the any
microorganisms
• A ciliated mucous membrane is also
found in the lining of the nasal cavity

10. NASAL CAVITY

11. LARYNX

12. LARYNX
• Also called Adams apple or
vocal cords
• Passage way of air we breath
• It is protected by a muscle
known as epiglottis

13. TRACHEA

14. TRACHEA
• Also called as the windpipe
• Lined with cilia and fluid that
traps germs and other
materials from the air
• Cilia also traps dust and dirt
upward away from the lungs

15. LUNGS

16. LUNGS
• located on each side of the
chest
• They are separated by your
heart, blood vessels and your
esophagus
• Serves as an organ for breathing

17. BRONCHIAL TUBES
• Branches of
the trachea
that is
embedded in
the lungs

18. BRONCHIOLES
Small
branches
of bronchi

19. ALVEOLI
• Also known
as the air
sacs
• It is where
the
exchange of
gases
happen