1. Class #2

2. Fill in the blanks with the correct response. 1. _________ is the movement of air into and out of the lungs. 2. Breathing enables your ___________ to take in oxygen. 3. ______ is so important for your body. 4. Every _____ in your body needs oxygen. 5. During ________, oxygen and sugars react. 6. Your respiratory system removes ________ and other wastes gases from your body. Name: ____________ Breathing Respiratory System Carbon Dioxide Cellular Respiration Oxygen

3. The Respiratory System

4. Carbon dioxide Trachea Bronchia Respiratory SystemOxygenLungs Diaphragm Pharynx

6. Trachea

7. Lungs

8. Diaphragm

9. Bronchi

10. Functions of the Respiratory System If you’ve ever held your breath, you probably took deep breathes afterward. That’s your body’s way of getting the oxygen it needs. Breathing is the movement of air into and out of the lungs. Breathing enables your respiratory system to take in oxygen and to eliminate carbon dioxide.

11. Taking in Oxygen Think about the plumbing pipes that bring water into a house. Your respiratory system is similar. It is a system of organs that brings oxygen into your body. Oxygen is so important for life that your brain will tell your body to breathe even if you try not to. Why is oxygen so important? Every cell in your body needs oxygen for a series of chemical reactions called cellular respiration. During cellular respiration, oxygen and sugars react. This reaction releases energy a cell can use.

12. Eliminating Carbon Dioxide The plumbing in a house also includes pipes that take away wastewater. In a similar way, your respiratory system removes carbon dioxide and other waste gases from your body. If waste gases are not removed, cells cannot function.

13. Organs of the Respiratory System Follow the path of oxygen through the respiratory system in Figure 1. Air enters through the mouth and the nose. In the nose, the air is warmed and moistened. Hairs and sticky mucus in the nose help trap dust and dirt from the air. Cilia line the nose and most airways in the respiratory system. Wavelike motions of the cilia carry trapped particles away from your lungs. The cilia help prevent harmful particles from getting very far into your respiratory system.

14. Organs of the Respiratory System Follow the path of oxygen through the respiratory system in Figure 1.

15. Organs of the Respiratory System Air enters through the mouth and the nose.

16. Organs of the Respiratory System Air enters through the mouth and the nose. In the nose, the air is warmed and moistened.

17. Organs of the Respiratory System Hairs and sticky mucus in the nose help trap dust and dirt from the air.

18. Organs of the Respiratory System Cilia line the nose and most airways in the respiratory system.

19. Organs of the Respiratory System Wavelike motions of the cilia carry trapped particles away from your lungs.

20. Organs of the Respiratory System The cilia help prevent harmful particles from getting very far into your respiratory system.

21. Pharynx Air passes from the nose and mouth into the throat.

22. Pharynx The pharynx is a tube like passageway at the top of the throat that receives air, food, and liquids from the mouth or nose.

23. Pharynx The epiglottis is a flap of tissue at the lower end of the pharynx.

24. Pharynx The epiglottis keeps food and liquids from entering the rest of the respiratory system.

25. Larynx and Trachea Air passes from the pharynx into a triangle-shaped area called the voice box or larynx.

26. Larynx and Trachea Two thick folds of tissue in the larynx- the vocal cords- vibrate and make sounds as air passes over them.

27. Larynx and Trachea Air then enters the trachea, a tube that is held open by C-shaped rings of cartilage.

28. Homework Path:____________________ Warmed:_________________ Moistened:_______________ Sticky:_________________ Mucus:___________________ Cilia:_________________ Airways:__________________ Wave like:_______________ Prevent:__________________ Particles:_________________ Throat:___________________ Passageway:_______________ Translate the words into Chinese and then send me a WeChat message saying the words in English Name:____________ Pharynx:__________________ Epiglottis:___________________ Larynx:_______________ Voice box:_________________ Vibrate:___________________ Cartilage:_________________ Folds:__________________

29. Organs of the Respiratory System Follow the path of oxygen through the respiratory system in Figure 1. Air enters through the mouth and the nose. In the nose, the air is warmed and moistened. Hairs and sticky mucus in the nose help trap dust and dirt from the air. Cilia line the nose and most airways in the respiratory system. Wavelike motions of the cilia carry trapped particles away from your lungs. The cilia help prevent harmful particles from getting very far into your respiratory system.