1. Do Now
Describe what happens when you breathe, use as much detail as possible.

2. THE RESPIRATORY SYSTEM

3. The chemical process of getting energy out of food.
What is Respiration?
The chemical process of getting energy out of food.
Oxygen +
Energy
Food

4. Where does Respiration happen?
In mitochondria inside all cells.

5. Respiration Equation Glucose + O2  CO2 + H2O + ATP Energy Food
Carbon Dioxide
Oxygen
Water

6. Photosynthesis The opposite of respiration
CO2 + H2O + Sunlight  Glucose + O2

7. The Respiratory System has many parts

8. Do now Write out the equation for respiration
Write out the equation for photosynthesis

9. Nasal Cavity Is lined with cilia (tiny hairs) and mucous.
Warms, moistens, and cleans the air.

10. Pharynx
Back of throat.

11. Larynx
Is the voice box.
As air is breathed in and out, the vocal cords vibrate to make sounds. Sound waves are compressional waves generated by vibrations

12. Trachea Tube lined with rings of cartilage (for support).
Lined with cilia and mucous for trapping dust.

13. Epiglottis:
Flap that covers trachea when swallowing

14. OPEN
CLOSED

15. Bronchi
2 tubes from the trachea.
Bronchioles
The tiny branches that branch off from the bronchi.

16. Fluid filled sac that surrounds each lung.
Pleura
Fluid filled sac that surrounds each lung.
Protects the lungs

17. Air sacs found at the end of the bronchioles are called Alveoli
Air sacs found at the end of the bronchioles are called Alveoli. They are surrounded by capillaries. This enables gas exchange to take place

18. capillary

19. The lung is not a big empty balloon!
It is more like a sponge with lots of air pockets.

20. What is the benefit???

21. The benefit is more surface area for gas exchange.

22. Gas exchange is occurring in the diagram below. Label the parts.
capillary
alveolus O2
RBC
CO2

23. Diaphragm
A sheet of smooth muscle which changes the size of the chest cavity.

24. Mechanics of Breathing

25. Inhalation The diaphragm contracts and moves down
The volume of the chest cavity increases
Air is sucked in.

26. Exhalation The diaphragm relaxes and moves up
The volume of the chest cavity decreases
Air is forced out

27. ASTHMA Reactive airway disease
Constriction of the bronchioles makes breathing difficult.

28. BRONCHITIS
Inflammation of the linings of the bronchial tubes caused by bacteria or virus.
Air passages become swollen and clogged with mucus

29. BRONCHITIS

30. EMPHYSEMA
Walls of the alveoli break down, less surface area to obtain oxygen
Caused by smoking

31. LUNG CANCER
Tumors form in the lungs as a result of uncontrollable cell reproduction.
Caused by smoking, or breathing in cancer causing materials.

33. Do Now State the chemical equation for respiration.
Circle the parts of the equation that directly deal with the respiratory system.

34. Exit Ticket
On a blank sheet of paper, write your name and describe the relationship between exercise and rate of respiration.
Turn this in to Mr. Joyce before you leave.