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Page 1: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+
Page 2: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

Respiratory  System  

•  Provides  oxygen  to  cells    for  cellular  respira8on.  

•  Oxygen  can’t  be  stored  so  must  be  provided  con8nually  

Page 3: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

The  Conduc8ng  Zone  

•  Carries  air  to  the  lungs.  •  Humidifies,  and  purifies  incoming  air.  

Page 4: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

Path  of  Air  Into  Lungs  

•  Air  comes  in  through  the  nose  or  mouth.  The  inside  of  the  nose  is  covered  with  a    layer  of  mucus  to  clean  the  air.  

•  Air  travels  down  your  pharynx  (throat),  past  your  larynx  (voice  box),  and  through  your  trachea  (windpipe)  into  the  bronchial  tubes  in  your  lungs.  

 

Page 5: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

The  Respiratory  Zone  

•  Where  gas  exchange  occurs  including  puKng  oxygen  into  your  blood  and  removing  carbon  dioxide  from  your  blood.  

•  Comprised  of  the  lungs  and  its  parts  

Page 6: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

Lungs  

•  Alveoli  -­‐    8ny  air  sacs  at  the  end  of  the  bronchial  tubes  that  are  surrounded  by  capillaries.  

•  Oxygen  moves  through  the  walls  of  the  alveoli  and  into  the  blood.  

•  Carbon  dioxide  moves  out  of  blood  and  into  the  alveoli.  

Page 7: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

Chest  Cavity  

•  Lungs  are  protected  by  the  rib  cage  •  Diaphragm  –    a  dome-­‐shape  muscle  that  the  lungs  rest  on  

Page 8: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

Breathing  

•  Inhaling  –  the  diaphragm  contracts  pulling  air  into  the  lungs  to  provide  oxygen  to  the  blood.  

•  Exhaling  –  the  diaphragm  relaxes  pushing  air  out  of  the  lungs  to  remove  carbon  dioxide  from  the  blood.  

Page 9: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

Asthma  

•  causes  the  airways  of  the  lungs  to  swell  and  narrow,  leading  to  wheezing,  shortness  of  breath,  chest  8ghtness,  and  coughing.  

Page 10: Respiratory+System+ - MS Science - Resourcesthomascallscience.weebly.com/.../respiratory_system.pdf · 2020. 3. 19. · Respiratory+System+ • Provides+oxygen+to+cells++for+cellular+

Emphysema  

•  Makes  it  difficult  to  breathe.  •  Most  common  form  of  lung  disease.  •  Smoking  is  the  leading  cause  for  emphysema.