Human Respiratory

• Respiration

  Is the overall process by which the body gets rid of carbon dioxide.
• Breathing

  Is the mechanical phase of respiration which involves inhalation and expiration.
• Epiglottis


  A thin flap of tissue which covers the respiratory tract during deglutition.
• Pleural Cavity


  An empty space where the lungs is situated.
• Diaphragm


  A dome-shaped, muscular partition separating the thorax from the abdomen in mammals which plays a major role in breathing.
• Functions of the Respiratory System

  • To facilitate the exchange of gases (O2 and CO2) between the atmosphere and blood.
  • Oxygen fueled cell organelles to create energy (ATP).
• Functions of the Respiratory System

  • Breathing/Ventilation - Moving of air into and out of the lungs.
  • Respiration - The overall process which body gets oxygen and gets rid of carbon dioxide.
• 3 Levels of the Process of Respiration

  • Cellular Respiration - Usage of oxygen to produce ATP and Carbon Dioxide as waste/by product.
  • Internal Respiration - Exchange of O2 and CO2 between the blood and cell.
  • External Respiration - Exchange of gasses between the lungs and the atmosphere (alveoli).
• Humans breathe to ensure that oxygen enters the body and that carbon dioxide leaves the body.
• Air enters through either the mouth or the nostrils.
• The respiratory system is found in the thorax.
• The respiratory is also known as breathing system.
• Mechanism of Breathing