1. Respiratory System
EQ: How does our body get the oxygen it needs and get rid of the excess carbon dioxide produced from cellular respiration?

2. Root Words

3. Respiratory System Obtain oxygen and remove carbon dioxide
Regulates water and air temp
Produce vocal sounds
Regulates blood pH level

4. Diaphragm Large muscle in your chest cavity that contracts and relaxes
Acts like a vacuum, pulls air in and pushes it out

5. Breathing Mechanisms Inspiration
Process of inhaling and breathing in air
Diaphragm contracts, causing air to flow into lungs

6. Breathing Mechanisms Expiration
Process of exhaling or breathing out air
Diaphragm relaxes, forcing air out of lungs

7. Organs of Respiratory System
Nose, Nasal Cavity
Pharynx
Larynx
Trachea
Bronchial Tree
Lungs

8. Nose and Nasal Cavity Hallowed cavity that allows air to enter/leave
Prevents large particles to enter
Composed of bones
Nasal Septum and Nasal Conchae

9. Sinuses Air-filled space within the facial bones of the skull
Mucous lined, helps reduce weight of the skull and affects quality of voice

10. Pharynx Aka the throat, passage way for food and for air
Also produces speech sounds

11. Larynx Enlargement of muscles and cartilage at the top of the trachea.
Conducts air in and out, prevents foreign objects from entering
Also houses vocal cords

12. Larynx

13. Trachea
Windpipe, extends anterior to esophagus toward the bronchi and lungs

14. Bronchial Tree
Branched airways leading from trachea to air sacs in lungs
Lead to Alveolar Ducts and Alveolar Sacs

15. Alveolar Sac like bulbs at the end of brachial branch
Surrounded by blood capillary networks

16. Gas Diffusion
O2 diffuse out to the capillaries, CO2 diffuse into the alveoli
Flow from High to Low concentrations

17. Factors that Affect Breathing
Emotions and physical activity can alter normal breathing patterns
Hyperventilation: Rapid and deep breathing, lowers blood CO2 levels

18. Left Side Activity
Draw the respiratory system and trace the path that oxygen travels through it. Label the parts the oxygen passes through and explain what happens in the lungs.
Explain how we breathe.