The respiratory system
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The respiratory system

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The respiratory system The respiratory system Presentation Transcript

  • The Respiratory System
  • Purpose of the respiratory system• To provide a constant supply of oxygen to keep your body cells functioning• To remove carbon dioxide from the body cells
  • Organs of the respiratory system• Nose / mouth • Trachea• Nasal cavity • Bronchus (bronchi) Lungs• Pharynx • Bronchioles• Epiglottis • Alveoli• Larynx • Pleura• Trachea • Diaphragm
  • Figure 10.1
  • Components of the Upper Respiratory Tract Figure 10.2
  • Upper Respiratory Tract Functions Passageway for respiration Receptors for smell Filters incoming air to filter larger foreign material Moistens and warms incoming air Resonating chambers for voice
  • Components of the Lower Respiratory Tract Figure 10.3
  • Lower Respiratory Tract Functions:  Larynx: maintains an open airway, routes food and air appropriately, assists in sound production  Trachea: transports air to and from lungs  Bronchi: branch into lungs  Lungs: transport air to alveoli for gas exchange
  • Gas Exchange Between the Blood and Alveoli Figure 10.8A
  • Respiratory Cycle Figure 10.9
  • http://mhln.com
  • Measurement of Lung Capacity Figure 10.10A
  • Disorders of Respiratory System Reduced air flow: asthma, emphysema, bronchitis Infections: pneumonia, tuberculosis, botulism Lung cancer Congestive heart failure Cystic fibrosis
  • Relationship to digestive system• Cellular respiration requires glucose and oxygen to release energy to the body• C6H12O6 + 6O2  6CO2 + 6 H2O + Energy• Oxygen is provided by the respiratory system• Glucose is provided by the digestive system• (glucose is made during photosynthesis)