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Respiratory System

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Respiratory System In Class Notes: Function The function of the circulatory system is to transport nutrients, oxygen, and hormones throughout the body Also, the ... – PowerPoint PPT presentation

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Title: Respiratory System


1
Respiratory System
  • In Class Notes

2
Function
  • The function of the circulatory system is to
    transport nutrients, oxygen, and hormones
    throughout the body
  • Also, the circulatory system carries waste away
    from the body.

3
Organs Involved
  • Nose/Mouth- air enters respiratory system
  • Pharynx- chamber in upper throat where air passes
  • Epiglottis- flap of tissue that momentarily
    covers the air pathway and prevents water or food
    from entering
  • Larynx- voice box and air pathway
  • Trachea- air pathway AKA windpipe
  • Bronchi- connects trachea to lungs
  • Lungs- exchanges oxygen and CO2 with the blood
  • Bronchioles- thin tubes that branches from the
    bronchus within the lungs
  • Alveoli- tiny air sac
  • Diaphragm- a sheet of muscle that plays a key
    role in breathing

4
Sequence of breathing
  • INHALING
  • Diaphragm and ribs contract
  • Fill up lungs with air
  • EXHALING
  • -diaphragm and ribs relax
  • -air rushes from lungs out of nose or mouth

5
Diagram
6
Parts you should know
                                                                                                                                  
7
How is breathing regulated?
  • Breathing is regulated by the medulla in the
    brain.
  • The medulla increases the breathing rate when the
    CO2 level is too high.
  • When the body is a rest or does not require high
    levels of oxygen the rate of breathing slows.

8
What effects does smoking have on the respiratory
system?
  • Smoking exposes the respiratory system to many
    harmful substances.
  • These substances can
  • Destroy cilia
  • Increase risk of lung cancer
  • Increase risk for other respiratory diseases

9
Name at least 3 disorders provide a description
  • Asthma disease affecting the airways that carry
    air to and from lungs
  • Aortic aneurysms weakened bulging areas in the
    aorta
  • Stroke if a clot forms in an artery leading to
    the brain a stroke can occur
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