LAB MANUAL FOR HUMAN A&P MAIN VERSION
4th Edition
ISBN: 9781266871016
Author: Martin
Publisher: MCG
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Textbook Question
Chapter 53, Problem 2.1CT
Use the following carbonic acid-bicarbonate buffer system equation to identify the direction (to the right or to the left) the equation would move as a corrective homeostatic response by the respiratory system to acidosis:
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Consider the equilibrium shown below; indicating the buffering system in the blood
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CO, + H,0
[H,CO3]
HCO3¯+H*
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Calculate the pH of a blood plasma sample with a total CO₂ concentration of 25.7 mM and bicarbonate concentration of
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Enter the answer with three significant figures.
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Chapter 53 Solutions
LAB MANUAL FOR HUMAN A&P MAIN VERSION
Ch. 53 - Prob. 1PLCh. 53 - Prob. 2PLCh. 53 - Which of the following muscles is not involved in...Ch. 53 - Peripheral chemoreceptors sensitive to low blood...Ch. 53 - Prob. 5PLCh. 53 - Inhaled dust and pollutants stimulate ________ to...Ch. 53 - An increase in the duration of inspirations is the...Ch. 53 - The ventral respiratory group of the brainstem...Ch. 53 - The respiratory centers are widely scattered...Ch. 53 - The _________________________ respiratory group...
Ch. 53 - The __________________________ respiratory group...Ch. 53 - Central chemoreceptors are sensitive to changes in...Ch. 53 - As the blood concentration of carbon dioxide...Ch. 53 - As a result of increased breathing, the blood...Ch. 53 - Peripheral chemoreceptors include aortic bodies...Ch. 53 - Prob. 1.8ACh. 53 - The principal muscles of inspiration are the...Ch. 53 - Briefly explain the reason for the changes in...Ch. 53 - Complete the following: a. Why is it important to...Ch. 53 - Use the following carbonic acid-bicarbonate buffer...Ch. 53 - Why is it dangerous for a swimmer to...
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- Which of the following is incorrect regarding the bicarbonate buffer system: A B C D an increase in proton will lower blood pH carbonic anhydrase catalyzes the formation of carbonic acid from proton and bicarbonate ion the purpose of the buffer system is to resist changes in blood pH alkalosis is defined as a pH of > 7.45arrow_forwardUsing the Henderson-Hasselbalch equation for part a, b, and c Given: If the CO2 concentration decreases from 40 mmHg to 30 mmHg a. how much will the pH change? Given: If an unknown amount of CO2 is dissolved eventually leading to a pH of 8.4 b. What is final concentration of CO2? c. How would the body respond in each case? (Answer a, b, and c)arrow_forwardExposure to air containing 600 ppm CO for 30 minutes results In an actual HbCO blood concentration of 10%. Estimate the percentage of the equilibrium saturation value of HbCO.arrow_forward
- State the chemical equation for the bicarbonate buffer system.arrow_forwardWrite the equation for the bicarbonate buffer. What enzyme catalyzes this reaction?arrow_forwardThe following data was obtained from an arterial blood sample drawn from a hospital patient. pH= 7.55 (7.35-7.45) PaCO2=25mmHg (33-45mmHg) HCO3-= 22.5mEq/L (22-28mEq/L The patient’s arterial findings are consistent with a diagnosis of which of the following? metabolic acidosis respiratory alkalosis metabolic alkalosis mixed acidosis respiratory acidosisarrow_forward
- State the reversible chemical equation for the reaction of carbon dioxide and water to carbonic acid and then to hydrogen ion and bicarbonate ion.arrow_forwardBicarbonate/carbonic acid buffer in blood is an example of an equilibrium reaction that is meant to be very insensitive to change. How does the bicarbonate/carbonic acid buffer re-establish equilibrium if acidity increases? How does the bicarbonate/carbonic acid buffer re-establish equilibrium if alkalinity increases?arrow_forwardA 50-year-old man came to the emergency department after returning from foreign travel. His symptoms included persistent diarrhea (over the past 3 days) and rapid respiration (tachypnea). Blood gases were drawn with the following results: pH 7.21 pco2 19 mm Hg po2 96 mm Hg HCO3 − 7 mmol/L SO2 96% (calculated) (reference range, >95%) Question: What is the patient’s acid–base status? Why is the HCO3 − level so low? Why does the patient have rapid respiration?arrow_forward
- Carbonic anhydrase is an extremely efficient enzyme in red blood cells that performs the essential function of trapping C02 coming out of tissues and hydrating it with H,0. The product of this reaction is which dissociates into a proton and a (Hint: the reaction is H20 + CO2 +„H+ bicarbonate; carbonic acid carbonic acid; carbonate carbonate; carbonic acid carbonate; bicarbonate carbonic acid; bicarbonatearrow_forwardPROBLEM 12.27 (a) Use Table 12.5 to calculate the osmotic pressure of the hemodi- alysis solution at 25 °C. (b) If the osmotic pressure of blood at 25 °C is 7.70 atm, what is the direction of solvent movement across the semipermeable mem brane in dialysis? (Blood to dialysis solution or dialysis solution to blood)arrow_forwardA 50-year-old man came to the emergency department after returning from foreign travel. His symptoms included persistent diarrhea (over the past 3 days) and rapid respiration (tachypnea). Blood gases were drawn with the following results: pH 7.21 pco2 19 mm Hg po2 96 mm Hg HCO3 − 7 mmol/L SO2 96% (calculated) (reference range, >95%) Why is the HCO3 − level so low? Why does the patient have rapid respiration?arrow_forward
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