Exercise 10: Acid Base Balance

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EXERCISE 10: Acid-Base Balance

Student Name: ______________Student ID#: ______________

Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Rename this document to include your first and last name prior to submitting, e.g. Exercise10_JohnSmith.doc. Please make sure that your answers are typed in RED. (You may delete these instructions before submission.)

Grading: True/False, Multiple-Choice, and Fill-in-the-blank type questions will be worth 1 point each whereas Short-answer type questions will be worth 2 points each. This lab will be worth a total of 45 points but will be converted to a percentage grade when registered in your “Gradebook”.

|ACTIVITY 1: Hyperventilation |Answers | |A substance that dissolves in water to release hydrogen (H+) ions is a(n) _______. |Acid | |Which of the following is not a regulatory mechanism for acid/base balance in the body? |D – Digestive System | |the kidneys | | |the respiratory system | | |protein buffers | | |the digestive system | | |The maximum pH measured during hyperventilation was _______. |7.58 | |The tidal volume (TV) when breathing at rest was about _____ ml. The TV with hyperventilation was |3 | |about _____ ml. |4.2 | |Describe the normal ranges for pH and PCO2 in the blood. |Min Pco2 – 40 Max Pco2 – 40 | | |Min pH – 7.41 Max pH – 7.41 | |Describe what happened to the pH and the carbon dioxide in the blood with hyperventilation. |Min Pco2 lowered to 25.94 (well below normal) | | |Min pH stayed around normal at 7.4 | |Explain how returning to normal breathing after hyperventilation differed from hyperventilation |With straight hyperventilation the pH stayed within average and | |without returning to normal breathing. |the carbon dioxide lowered tremendously. With the | | |Hyperventilation then back to normal breathing the carbon | | |dioxide levels did not lower as much and the pH stayed around | | |the normal zone as well....
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