1. The Respiratory System
Breath of life- The air we breathe consists of
approximately 21% oxygen, 78% nitrogen,
and other trace amount of other gases.
Main Function-
1. To bring in fresh oxygen for your cells
2. To get rid of carbon dioxide from the cells
The Respiratory System

2. Parts of The Respiratory System
A. Nose and Mouth- air enters and is
warmed and cleaned by tiny hairs
(cilia)

3. B. Pharynx- the back of the throat- where
the mouth and nose meet.
Uvula- tissue that hangs at back of the
throat to protect nasal area

4. C. Epiglottis- flap that protects trachea
when we swallow.

5. D. Larynx- the voice box contains our
vocal cords.

6. E. Trachea- the wind pipe. Supported by
rings of cartilage.

7. Bronchi- 2 tubes that branch off and carry
air to each lung

8. G. Lungs- two balloon like structures made
up of thousands of tiny air sacs called
alveoli. Each alveoli exchanges
oxygen (O2) and carbon dioxide (CO2)
when we breathe.

9. H. Diaphragm- the floor of the chest cavity.
A muscle that contracts when you
inhale and relaxes when you exhale.

10. Problems of Respiration
1. Flu and Colds- caused by a virus.
Symptoms- cough, runny nose, body
aches , and fever
- Treatment- rest, drink fluids, OTC cold
medicines, see your doctor.

11. 2. Tuberculosis- bacterial lung infection.
Symptoms- dry cough, chest pain
- Treatment- antibiotics

12. 3. Pneumonia- inflammation of the lung
tissue causing lungs to fill with fluid
Symptoms- severe cold an cough,
fever, chest pain
-Treatment- antibiotics, rest, oxygen tent

13. 4. Bronchitis- infection of the bronchi.
Symptoms- coughing, thick mucus, can
lead to pneumonia
-Treatment- antibiotics, rest, pain and
cough medicine

14. 5. Asthma- an allergic response to dust,
pollen, or other irritants that causes
airway to swell shut an fill with mucus.
Symptoms- out of breath, wheezing,
coughing
-Treatment- inhaler (medicine), breathe
oxygen, avoid allergens

15. 6. Emphysema- number one cause smoking
A condition where the alveoli are destroyed
do not expand and contract- can’t breathe!
-Treatment- no cure!, oxygen, remove
mucus build-up

16. 7. Lung Cancer- lung tissue is destroyed
by disease. Most common type of cancer in
both men and women.
Number one cause Smoking!
-Treatment- radiation, chemotherapy, surgery

17. Care of Respiratory System
1. Don’t Smoke
2. Avoid harmful vapors, pollutants, etc.
3. Exercise to keep healthy
4. Wear protective masks when exposed
to dust, paint, etc.
5. See a doctor if problems occur or persist