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Set up Cornell Notes on pg. 45 Topic: 30.2 Respiration and Gas Exchange Essential Question(s) :

30.2 Respiration and Gas Exchange. 2.1 Atoms, Ions, and Molecules. Set up Cornell Notes on pg. 45 Topic: 30.2 Respiration and Gas Exchange Essential Question(s) : Explain how diffusion allows gases to move into and out of the alveoli of the lungs.

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Set up Cornell Notes on pg. 45 Topic: 30.2 Respiration and Gas Exchange Essential Question(s) :

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  1. 30.2 Respiration and Gas Exchange 2.1 Atoms, Ions, and Molecules Set up Cornell Notes on pg. 45 • Topic: 30.2 Respiration and Gas Exchange • Essential Question(s): • Explain how diffusion allows gases to move into and out of the alveoli of the lungs. • In what ways can respiratory diseases reduce the level of O2 in the blood? KEY CONCEPT The respiratory system exchanges oxygen and carbon dioxide.

  2. KEY CONCEPT The respiratory system exchanges oxygen and carbon dioxide.

  3. Gas Exchange: Blow it Up!!!! Mini Lab P.44

  4. Gas Exchange- Blow it Up! • Loosen up your balloon (blow it up/stretch it out) DON’T MAKE IT POP! • Sit down. Take deep breaths in and out about five times • Hold a balloon to your mouth, taking care to keep the opening sealed tightly, and blow all the air out of your lungs. DO NOT TAKE ANOTHER BREATH! • Take the balloon out of your mouth, keeping the opening shut • Have your partner measure the girth of the balloon using string. Use a ruler to measure the string in cm

  5. Gas Exchange- Blow it Up! 6. Record in Table A as the Vital Capacity Girth 7. Breathe in and out normally. Have your partner count the number of breaths you take in 30 seconds. (1 breath= breathing in and then out) 8. Double this number to obtain the breaths taken in one minute and record on TABLE A as the Resting Respiratory Rate • With your partner timing you, run in place for one minute • Sit down, and have your elevated repiratory rate measured for 30 seconds • Double this # and record on TABLE A as the elevated respiratory rate

  6. Was there a difference between: - Boys and girls? - People who played sports and people who didn’t?

  7. Oxygen and carbon dioxide are carried by the blood to and from the alveoli. • Gases move by diffusion- higher concentration to lower concentration

  8. pons medulla oblongata • Breathing is regulated by the brain stem. The medulla oblonga sends messages through the nervous and endocrine systems that stimulate the diaphragm and rib cage muscles to work harder.

  9. Respiratory diseases interfere with gas exchange. • Lung diseases reduce airflow and oxygen absorption. • Emphysema destroys alveoli. • Shortness of breath • Asthma constricts airways • Bronchitis inflammation of the mucus membranes of the bronchus • Cystic fibrosis produces sticky mucus

  10. The Common Cold and Asthma (1m)

  11. Smoking is the leading cause of lung diseases.

  12. Air Pollution and Respiration (1m25s)

  13. Respiratory Diseases Articles and Informational Poster • In groups of 3, choose one of the respiratory diseases • Emphysema • Asthma • Bronchitis • Cystic Fibrosis • Read the informational article (DO NOT WRITE ON THEM) • Make an informational poster educating us on your disease • What is your disease and how does it affect your respiratory system? • Causes?/Symptoms?/Treatments? • Risk factors?/ Who is most at risk? • Short/long term effects of the disease?

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