Respiratory%20System

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Respiratory System

• In Class Notes

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FUNCTION OF THE RESPITORY SYSTEM

• Provides oxygen for cells
• Removes carbon dioxide from body

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Organs that are involved

• Mouth
• Nose
• Pharynx
• Larynx
• Trachea
• Lungs
• Epiglottis
• Bronchi
• Nasal cavity
• Bronchioles
• Alveoli
• Diaphragm
• Cilia

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Sequence Of Breathing

• 1. Air pressure drops in lungs, and air enters.
• 2. Diaphragm contracts, the lungs are pulled down
  and expanded.
• 3. Diaphragm relaxes, and lungs contract.
• 4. Air is forced out of lungs.

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Diagram
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Parts you should know
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Regulation of Breathing

• Regulation is controlled by the brain
• Breathing is involuntary you can hold your
  breath, but the effect in temporary
• Carbonic acid (carbon dioxide in water) levels
  dictate breathing
• A drop in pH level increases breathing a rise
  would slow breathing

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What effects does smoking have on the respiratory
system?
500,000 deaths a year are related to
smoking. Lung Cancer, Bronchitis, Emphysema, and
other sicknesses are caused by it. Smoking can
lead to poor health within the respiratory system.
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Name at least 3 disorders provide a description
-Asthma inflammation of the airways -Bronchitis
inflammation within the lungs -Emphysema-
Destruction of lung tissue