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The Respiratory System

The Respiratory System. Watch the video about the respiratory system. Provide gas exchange between the blood and the air Breath in oxygen, breathe out carbon dioxide. Functions. Pathway of Air Flow. Nose  Trachea  Bronchi  Lungs (alveoli). This is a test question. Collects the air

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The Respiratory System

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  1. The Respiratory System

  2. Watch the video about the respiratory system

  3. Provide gas exchange between the blood and the air Breath in oxygen, breathe out carbon dioxide Functions

  4. Pathway of Air Flow Nose  Trachea  Bronchi  Lungs (alveoli) This is a test question

  5. Collects the air Moistens and warms air Nose hairs and mucous trap dust, pollen, and other materials that are harmful if breathed in Nose

  6. Called the windpipe Tube that moves air from the nose to the lungs Has rings of cartilage that keep the tube from collapsing Trachea

  7. Tubes that move air from the trachea to the lungs One bronchus leads to each lung Bronchi

  8. Main organs where gases are exchanged between the air and the blood Lungs

  9. Tiny air sacs in the lungs Capillaries come into contact with the lungs to drop off CO2 and pick up oxygen Exchange of gases occurs through diffusion Alveoli

  10. Smooth muscle that aids in the breathing process Diaphragm

  11. Learning Check . Click on the picture and see how well you know the organs of the respiratory system.

  12. Flu (influenza) Caused by a virus Highly contagious Lasts longer than a cold Causes fever, muscle aches, and severe cough Infectious Diseases of the Respiratory System

  13. Colds Caused by a virus Once inside the body, the virus multiplies and attacks the nose and throat Causes sore throat, runny nose, and fever Cannot be treated with an antibiotic Infectious Diseases of the Respiratory System

  14. Infectious disease Caused by bacteria (streptococcus) Symptoms include fever, pain, redness, and swelling of the throat and tonsils Treated with an antibiotic Strep Throat

  15. Asthma Affects the lungs and airways leading to the lungs Causes attacks of wheezing and coughing Occurs when airways become inflammed Attacks can be caused by dust, pets, mold, exercise, or cold weather NonInfectious Diseases of the Respiratory System

  16. Why do you breath? • Our cells need oxygen to make energy through cellular respiration • Our bodies need to get rid of carbon dioxide that is produced through cellular respiration

  17. Inhale When your diaphragm contracts (moves down), the air pressure in your lungs decreases. The decreased pressure results in air being sucked into your lungs. How do you breathe?

  18. Exhale When the diaphragm relaxes (moves up), air pressure in your lungs builds up. To get rid of that pressure, your lungs pushes air out. How do you breathe

  19. Fun Questions Click on a question to find out the answer. • Why do we snore? • Why do we sneeze? • What’s a hiccup? 4 Why do we yawn?

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