1. Respiratory System
In Class Notes:

2. Function: (30.5)
Provide oxygen for cells and remove waste product carbon dioxide from the body

3. Organs Involved: (30.5) Nose/mouth-take in air
Pharynx- air passes through
Epiglottis- keeps food and water from entering air passageway
Larynx- voice box
Trachea-windpipe
Bronchi- connects trachea to lungs
Lungs- main organ of respiration
Bronchioles- bring air to alveoli
Alveoli- where oxygen passes into blood and carbon dioxide taken out
Diaphragm- controls breathing rate

4. Sequence of breathing:
In inhaling air pressure inside lungs drops and air enters, the diaphragm contracts and lungs are pulled down to expand.
In exhaling air is forced out of the lungs, the diaphragm relaxes and lung returns to normal shape and contract.

5. Diagram:

6. Parts you should know:

7. How is breathing regulated?
The rate of breathing is controlled by the medulla in the brain
When level of carbon dioxide in the blood is too high the medulla increases the breathing rate and vise-versa.

8. What effects does smoking have on the respiratory system?
Smoking exposes system to many harmful substances
Destroy cilia
Risk for lung cancer
Emphysema (walls of alveoli lose flexibility)
Cardiovascular diseases (stroke and heart attack)
Addiction

9. Name at least 3 disorders & provide a description:
Asthma
Inflammation and narrowing of lungs
Shortness of breath and difficulty breathing
Heart Murmurs
Whole in heart
Diastolic/Systolic
Sickle Cell Anemia
Genetic
Breaks down blood cells
Short of breath, fatigue, pain, blood clots, death