Respiratory system

• What are the functions of the respiratory system?

  • breath in and out air from the environment
  • transfer oxygen into the blood
  • remove carbon-dioxide from the blood
• Inspiration is movement of air from the external environment into the lungs
• expiration is movement of air out of the lungs to the external environment
• the diaphragm contracts during

  Inspiration
• the diaphragm relaxes during

  expiration
• COPD stands for: Chronic Obstructive Pulmonary Disease
• Chronic obstructive pulmonary disease is a number of lung diseases that prevent proper breathing
• Pneumonia is an infection or inflammation of the air sacs (alveoli) in the lungs
• common causes of Pneumonia

  • Bacteria
  • viruses
  • inhaling liquid, chemicals or dust into the lungs
• Emphysema is the repeated exposure to chemical irritants (such as smoking) the air passages & air sacs of the lungs becoming inflamed and damaged
• Pulmonary Embolism is the blockage in one of the pulmonary arteries in your lungs
• Pulmonary Embolism most cases, caused by blood clot that travels to the lungs
• Asthma is a common long term inflammatory disease of the lungs
• symptoms of Asthma is wheezing, coughing, chest tightness and shortness of breath
• What is this?

  Asthma is the common long term inflammatory disease of the lungs
• causes and risk factors of COPD

  • cigarettes, vape smoking
  • long-term exposure to lung irritants
  • genes
• COPD develops so slowly that the person doesn't realize their ability to breathe is gradually becomes impaired
• risk factors of pneumonia:

  • cigarette smoking
  • chronic lung diseases
  • weakened immune system
  • old age
• what is diffusion?


  when molecules move from a high concentrated area to a low concentrated area