Carbon dioxide that accumulates in the blood can become toxic, in part because it alters the blood pH. Some of the carbon dioxide molecules react with water to form carbonic acid
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Chapter 2 Solutions
ANAT.+PHYSIO.1-LAB.MAN. >CUSTOM<
- The carbonic acid equilibrium is shown below. Exhalation of CO2 by the lungs causes this equilibrium to shift to the ______, which causes the pH of the blood to _______. H+ + HCO3- <=> H2CO3 <=> H2O + CO2 a) left; increase b) left; decrease c) right; decrease d) right; increasearrow_forwardtoo much carbon dioxide in the blood causes it to become acidic. What is directly responsible for the drop in PH? Accumulation of CO2, accumulation of H+, accumulation of HCO3-.arrow_forwardWhen the blood passes through the lungs, CO₂ is expelled and the hemoglobin picks up oxygen. Place the following steps in the correct order (1 = first thing to happen), assuming that it is the decreased [CO₂] during exhalation that initiates the transition. Carbonic anhydrase works to restore the CO₂/bicarbonate equilibrium, reducing the [H+] The T-state is less stabilized. Oxygen binds to the hemoglobin. Protons dissociate from the hemoglobin.arrow_forward
- Carbon dioxide that accumulates in the blood can become toxic, inpart because it alters the blood pH. Some of the carbon dioxide molecules react with water to form carbonic acid (CO2 + H2O H2CO3).Ned can swim across the swimming pool under water. Before divinginto the water, he breathes rapidly for a few seconds, and while he isunder the water he does not breathe at all. Explain how the pH of hisblood changes while breathing rapidly and while swimming under water.Also explain why the pH of his blood does not change dramaticallyarrow_forwardA given amount of blood have 19% O2 measured at 0 °C and 1.0 atm. Hemoglobin in the blood can carry up to four molecules of O2. Calculate how many molecules of hemoglobin is present in 1.0 L of blood.arrow_forwardIf there were little to no Chloride in the blood, what would happen to CO2 transport and why? Select one: O a. CO2 transport would not change because chloride is not part of the carbonic anhydrase reaction O b. CO2 transport would decline because H+ would not be able to bind to hemoglobin O c. CO2 transport would decline because HCO3 wouldn't be able to exit the red blood cell thus inhibiting the carbonic anhydrase reaction O d. CO2 transport would increase because HCO3 would be able to exit the red blood cell more freelyarrow_forward
- A patient with COPD for 30 years is admitted to the hospital He has severe shortness of breath His ABGs are as follows pH: 7.25 pCo2: High HCO3: High Identify the disorder O Metabolic acidosis O Metabolic alkalosis O Respiratory alkalosis O Respiratory acidosisarrow_forwardWhen dissolved in water a blank donates H+ and blank accepts H+arrow_forwardIncrease in partial pressure of carbon dioxide and decrease in pH below 7.35 metabolic acidosis metabolic alkalosis respiratory acidosis respiratory alkalosisarrow_forward
- Carbonic anhydrase converts: 00 CO2 + H20 to Bicarbonate and H+ Bicarbonate and H+ to CO2 + H20 carbon dioxide to H20 bicarbonate to hydrogen ion Both A and Barrow_forwardThe pH is High; Low O Low; High in the lungs and in the muscles. High in the lungs but there is no oxygen in the muscles Equal in both the lungs and the musclesarrow_forwardRebecca is found to have acidosis. She has elevated PCO2 and [HCO3-]. Which of the following is false? O her acidosis was caused from excess CO2 reacting with water to form carbonic acid O this is a metabolic acidosis kidney cells are using carbonic anhydrase to generate HCO3- for the blood O her blood pH is lower than normalarrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
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