| ACT #1: Introduction to the Respiratory System
(pg. 910 Alligator text) (A) What happens to our breathing rate when our brain senses oxygen deficiency? (B) What is respiration? (Remember, we aren�t talking about cellular respiration here!) ACT #2: Respiratory Organs (pg. 910 Alligator text) (A) Sketch the organs of the respiratory systems from class (Just insert your notes from class.) Make sure you understand the directionality of the flow of gases. (B) What is the importance of the diaphragm? (C) What is the importance of the alveoli? ACT #3: Gas Exchange (pg. 914 text) (A) What is a pressure gradient? Explain how a pressure gradient would allow or aid in the exchange of gases. How is a pressure gradient like a concentration gradient? (B) There are 3 factors which can increase or decrease the amount of gases exchanged. Explain how each factor effects the amount of gases exchanged: 1) Surface Area: 2) Ventilation: 3) Transport Cells: ACT #4: The Movements of Breathing In your notebook, copy the chart below. Fill in the chart with information about breathing. When you breathe in, When you breathe out, what happens to: what happens to: Diaphragm and rib muscles Chest cavity volume Air pressure in chest Air goes where? ACT #5: Vital Capacity Lab Manual in class. ACT #6: Controlling respiration A) What is the role of hemoglobin in blood? B) Explain in your own words how gases (oxygen and carbon dioxide) are exchanged in the lungs. Make sure you use words like alveoli, capillaries, high concentration, low concentration, hemoglobin, and of course, O2 and CO2. C) What advantage is there in having a bunch of little air sacs (alveoli) in our lungs? D) Explain how poorly the lungs would work if it didn�t have the alveoli. ACT #7: When the Lungs break down (pg.916 text) A) What are the effects of Emphysema on your lungs? B) What are the effects of asthma on your lungs? |