1. Respiratory System

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, Left and Right Branch
Lead to Bronchioles and to Alveolar

15. Bronchioles
Smaller branches from which the Alveolar are attached

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

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

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

19. Gas exchange- Follow along?
Atmospheric pressure at sea level is Patm=_______ mmHg (Mercury)
FIO2=
What the Inspired air made of? (%)
Partial Pressure Oxygen is calculated:
pO2= %O2 x 760mmHg
How much oxygen are we breathing in?
What is the Vapor Pressure in our body?
What is the Partial Pressure Oxygen at Brachial Branch?

20. Use the Graph to answer
How much partial pressure of Oxygen (pO2) are we breathing in at Ski Resort?