![Page 1: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/1.jpg)
Topic: Respiratory SystemAim: Describe the processes of gas
exchange and breathing.
Do Now: Describe the path of air when you inhale.
HW:
![Page 2: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/2.jpg)
nose
mouth
larynx
lung
bronchi
diaphragm
pharynx
trachea
bronchi
bronchioles
alveoli
![Page 3: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/3.jpg)
Did you know…•Your lungs contain almost 1500 miles
of airways and over 300 million alveoli.
•During normal breathing, the speed that you exhale air is about 4 miles per hour.
•Plants are our partners in breathing. We breathe in air, use the oxygen in it, and release carbon dioxide. Plants take in carbon dioxide and release oxygen.
![Page 4: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/4.jpg)
Gas exchange
a. Alveoli fill up O2
![Page 5: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/5.jpg)
b. O2 diffuses into capillaries
c. CO2 & H2O vapor diffuses out of capillaries into alveoli
![Page 6: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/6.jpg)
Inside of alveolus
O2
CO2
![Page 7: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/7.jpg)
![Page 8: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/8.jpg)
Diaphragm
![Page 9: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/9.jpg)
•Sheet of muscle under lungs
•Aids in breathing
![Page 10: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/10.jpg)
![Page 11: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/11.jpg)
When your diaphragm becomes irritated, it pulls down in a jerky way, which makes you suck air into your throat suddenly. When the air rushing in hits your voice box, you're left with a big hiccup. Some things that irritate the diaphragm are eating too quickly or too much, excessive laughing, an irritation in the stomach or the throat, or feeling nervous or excited (breathing fast).
![Page 12: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/12.jpg)
Breathing•Inhalation air travels INTO lungs
•Exhalation air pushed OUT OF lungs
•Involves the diaphragm & rib cage muscles
![Page 13: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/13.jpg)
Inhalation
![Page 14: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/14.jpg)
•Diaphragm moves DOWN (contracts)
•Rib cage expands•Less pressure•Air rushes in
![Page 15: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/15.jpg)
Exhalation
![Page 16: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/16.jpg)
•Diaphragm moves UP (relaxes)
•Rib cage relaxes•More pressure•Air forced out
![Page 18: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/18.jpg)
![Page 19: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/19.jpg)
![Page 20: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/20.jpg)
REMEMBER…Inhale DOWN
Exhale UP
![Page 21: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/21.jpg)
What controls breathing rate?
![Page 22: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/22.jpg)
•Brain MEDULLA–Detects the level of CO2 in the blood
![Page 23: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/23.jpg)
Let’s summarize…:
1. Where does gas exchange occur?
2. Describe the process of gas exchange.
3. Which way does the diaphragm move during inhalation? During exhalation?
4. What happens to pressure in the chest cavity during inhalation? During exhalation?
5. Which gas regulates breathing rate?
![Page 24: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/24.jpg)
http://www.youtube.com/watch?v=6NXaHGuRMsc&feature=related
![Page 25: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/25.jpg)
BELL JAR MODEL OF THE RESPIRATORY SYSTEM
1
2
34
1 = TRACHEA2 = BRONCHI
3 = ALVEOLI4 = DIAPHRAGM
![Page 26: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/26.jpg)
BELL JAR MODEL OF THE RESPIRATORY SYSTEM
INHALATIONEXHALATION
![Page 27: Topic: Respiratory System Aim : Describe the processes of gas exchange and breathing](https://reader035.vdocument.in/reader035/viewer/2022062408/56813b7d550346895da495ac/html5/thumbnails/27.jpg)
BELL JAR MODEL OF THE RESPIRATORY SYSTEM
INHALATIONEXHALATION Diaphragm moves
DOWN Pressure decreases Air enters
Diaphragm moves UP Pressure increases Air forced up & out