1. The Respiratory System

2. Learning goals
We are learning the function and organs of the respiratory system.
We are learning the function and organs of the circulatory system.

3. Respiratory function
Gas exchange!!!
O2 in
CO2 out

4. nose mouth trachea lungs bronchi bronchioles alveoli diaphragm
Organs involved
nose
mouth
trachea
lungs
bronchi
bronchioles
alveoli
diaphragm

5. #
Label 1
Nasal Cavity 2
Mouth (oral cavity) 3
Epiglottis 4
Trachea 5
Bronchi 6
Rib 7
Intercostal Muscle 8
Lungs 9
Diaphragm 10
Esophagus 11
Bronchioles 12
Capillaries 13
Alveoli

6. Gas Exchange
Air enters the lungs through the bronchi which then branch to the bronchioles.
Off of the bronchioles are several alveoli.
The alveoli are covered in capillaries where the gas exchange happens.
Oxygen diffuses from the alveoli into the capillaries and CO2 diffuses from the capillaries into the alveoli.

7. Gas Exchange Why is gas exchange needed? Cellular Respiration:
Cells require oxygen and release carbon dioxide as waste.

8. Breathing controlled by a muscle called the diaphragm. inhalation:
Diaphragm contracts & flattens
Pressure in lungs is lower than outside
Air flows in

9. Breathing exhalation:
Diaphragm relaxes and reverts back to a dome
Pressure in lungs is higher than outside
Air flow out.
process is involuntary and controlled by a special part of the brain which detects CO2 levels in blood.

11. Circulatory system

12. function
transportation of materials (such as oxygen, nutrients, hormones, and wastes) within body
Organs include:
heart, blood vessels, blood

13. The Heart # Label 1 Aorta 2 Superior Vena Cava 3 Pulmonary Artery 4
Pulmonary Vein 5
Right Atrium 6
Tricuspid Valve 7
Right Ventricle 8
Inferior Vena Cava 9 10 11
Left Atrium 12
Mitral Valve 13
Aortic Valve 14
Left Ventricle 15

14. Learning goals
We are learning the function and organs of the respiratory system.
We are learning the function and organs of the circulatory system.

15. Please Complete
Circulatory system handout.