SBI3U M4,A5.docx - Name Priyaa Course Code SBI3U Module 4...

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Name: Priyaa Course Code: SBI3U Module 4, Activity 5 Page 451 2. The partial pressure of carbon dioxide in the blood is higher than the partial pressure of carbon dioxide in the atmosphere because when the oxygen enters the alveoli through the air partway, the water vapour and carbon dioxide are added to the oxygen. Then, it reduces the partial pressure of oxygen during the respiratory process. Thus, after the blood enters the lungs, the partial pressure of oxygen is 100 mmHg and carbon dioxide is 40 mmHg. 3. The gas exchange occurs when the oxygen gas diffuses into the blood and release out the carbon dioxide gas from the body. Blood is also known as haemoglobin which binds together with the oxygen and helps them to transport. The oxygen used during cellular respiration. Thus, the gases move from a higher concentration area to a lower concentration area. 6. (a) The medulla oblongata helps to detect the oxygen and carbon dioxide level. Then, the
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  • Fall '08
  • Henry
  • partial pressure of carbon dioxide

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