6/4/2020 PhysioEx Exercise 10 Activity 4 PhysioEx Lab Report Exercise 10: Acid-Base Balance Activity 4: Respiratory Responses to Metabolic Acidosis and Metabolic Alkalosis Name: Date: 4 June 2020 Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1 An increase in metabolic rate (without compensation) would result in You correctly answered: more carbon dioxide in the blood. 2 Excessive vomiting results in You correctly answered: loss of acid, metabolic alkalosis. 3 Which of the following is not acidic? You correctly answered: antacids. 4 Which of the following decreases the rate of metabolism? You correctly answered: lowered body temperature. Experiment Results Predict Questions 1 Predict Question 1: What do you think will happen when the metabolic rate is increased to 80 kcal/hr? Your answer: metabolic acidosis. 2 Predict Question 2: What do you think will happen when the metabolic rate is decreased to 20 kcal/hr? Your answer: Breaths per minute will decrease. Stop & Think Questions 1 The tidal volume and breaths per minute increased with increased metabolism because You correctly answered: there is more carbon dioxide being formed. 1/3 6/4/2020 PhysioEx Exercise 10 Activity 4 2 Which body system is compensating for the metabolic alkalosis? You correctly answered: respiratory. Experiment Data Metabolic Rate (kcal/hr) 50 BPM (breaths/min) P CO2 (mm Hg) 40 [H+] in Blood 40 [HCO 3-] in Blood 24 15 Blood pH 7.40 60 17 7.36 45 47 20 80 21 7.26 55 63 14.5 40 13 7.44 37 38 26 20 9 7.50 31 32 30 Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1 What happened to the breathing when metabolism was increased? You correctly answered: The breaths per minute and the tidal volume increased. 2 Which of the following is not a cause of metabolic acidosis? You correctly answered: constipation. 3 If PCO2 in the blood increases, then + You correctly answered: [H ] increases and pH decreases. 4 Which of the following values increased with decreased metabolism? You correctly answered: pH and [HCO ]. - 3 Review Sheet Results 1 Describe what happened to the blood pH when the metabolic rate was increased to 80 kcal/hr. What body system was compensating? How well did the results compare with your prediction? Your answer: Metabolic acidosis, the urinary system was compensating. 2 List and describe some possible causes of metabolic acidosis. Your answer: 2/3 6/4/2020 PhysioEx Exercise 10 Activity 4 Ketoacidosis, salicylate, alcohol consumption, diarrhea, and strenuous activity. 3 Describe what happened to the blood pH when the metabolic rate was decreased to 20 kcal/hr. What body system was compensating? How well did the results compare with your prediction? Your answer: The blood pH increased, the body was compensating the renal system and the breaths per minute decreased. 4 List and describe some possible causes of metabolic alkalosis. Your answer: ingestion of alkali, vomiting and constipation. 3/3