1. Respiratory System

2. Parts
Lungs
Air passages

3. Functions Takes in oxygen Removes carbon dioxide
Body has 4-6 minute supply of oxygen

4. Larynx Voice box Layers of cartilage Contains
Largest is the thyroid cartilage commonly called the Adam's apple
Contains
Vocal chords
Vibrate on exhaled air to produce sound
The tongue and lips act on the sound to produce speech
Epiglottis
Flap of cartilage that closes the larynx during swallowing and prevents food and liquids from entering the trachea

5. Trachea
Windpipe
Series of “C” shaped cartilage to keep the tube open to the back
Divide into the right and left bronchi
Continues to divide into smaller bronchioles
End in the alveoli
Air sacs

6. Alveoli One cell thick and surrounded by capillaries
Look like a cluster of grapes
Allow the exchange of oxygen and carbon dioxide

8. Lungs
Right lung 3 lobes
Left lung 2 lobes due to the heart

9. Diaphragm
Dome-shaped muscle that separates the thoracic cavity from the abdominal cavity

10. Process of Respiration
Controlled by the medulla oblongata in the brain
An increase in amount of CO2 in the blood , increases the rate of respiration
Both involuntary and voluntary process