Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 39, Problem 14RQ
The majority of carbon dioxide in the blood is transported by.
- binding to hemoglobin
- dissolution in the blood
- conversion to bicarbonate
- binding to plasma proteins
Expert Solution & Answer
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Check out a sample textbook solutionStudents have asked these similar questions
The majority of carbon dioxide is transported in the form of bicarbonate ions.
True
False
How is the bulk of carbon dioxide transported in blood?
O chemically combined with the heme portion of hemoglobin
as carbonic acid in the plasma
O chemically combined with the globin portion of hemoglobin
O all of the above
Which statement regarding carbon dioxide transport in the blood is true?
HCO3- dissociates into CO2 and O2.
H2CO3 dissociates into H+ and HCO3-.
93% remains dissolved in plasma as CO2.
The chloride shift occurs when Cl- moves out of RBCs in exchange for HCO3-.
25% is converted to H2CO3 by carbonic anhydrase.
Chapter 39 Solutions
Biology 2e
Ch. 39 - Figure 39.7 Which of the following statements...Ch. 39 - Figure 39.13 Which of the following statements is...Ch. 39 - Figure 39.20 The kidneys are responsible for...Ch. 39 - The respiratory system. provides body tissues with...Ch. 39 - Air is warmed and humidified in the nasal...Ch. 39 - Which is the order of airflow during inhalation?...Ch. 39 - The inspiratory reserve volume measures the...Ch. 39 - Of the following, which does not explain why the...Ch. 39 - The total lung capacity is calculated using which...Ch. 39 - How would paralysis of the diaphragm alter...
Ch. 39 - Restrictive airway diseases. increase the...Ch. 39 - Alveolar ventilation remains constant when...Ch. 39 - Which of the following will NOT facilitate the...Ch. 39 - The majority of carbon dioxide in the blood is...Ch. 39 - The majority of oxygen in the blood is transported...Ch. 39 - Describe the function of these terms and describe...Ch. 39 - How does the structure of alveoli maximize gas...Ch. 39 - What does FEV1/FVC measure? What factors may...Ch. 39 - What is the reason for having residual volume in...Ch. 39 - How can a decrease in the percent of oxygen in the...Ch. 39 - If a patient has increased resistance in his or...Ch. 39 - How would increased airway resistance affect...Ch. 39 - Explain how a puncture to the thoracic cavity...Ch. 39 - When someone is standing, gravity stretches the...Ch. 39 - What would happen if no carbonic anhydrase were...Ch. 39 - How does the administration of 100 percent oxygen...
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- A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the abovearrow_forwardBreathing _______. a. ventilates the lungs b. draws air into airways c. expels air from airways d. causes reversals in pressure gradients e. all of the abovearrow_forwardThe respiratory components of the medulla consist of which of the following? Dorsal respiratory group Apneustic center Ventral respiratory group Pneumotaxic center 1 only 2 only 1 and 3 only 2 and 4 onlyarrow_forward
- Of the following, which does not explain why the partial pressure of oxygen is lower in the lung than in the external air? Air in the lung is humidified; therefore, water vapor pressure alters the pressure Carbon dioxide mixes with oxygen Oxygen is moved into the blood and is headed to the tissues Lungs exert a pressure on the air to reduce the oxygen pressure.arrow_forwardExplain what a partial pressure gradient is and how such gradients figure in gas exchange.arrow_forwardHow does hemoglobin help maintain the oxygen partial pressure gradient during gas transport in the body?arrow_forward
- After oxygen diffuses into lung capillaries, it also diffuses into _______ and binds with _______. a. tissue fluid; red blood cells b. tissue fluid; carbon dioxide c. red blood cells; hemoglobin d. red blood cells; carbon dioxidearrow_forwardReferring to the loading and unloading of oxygen from hemoglobin (as illustrated in the figure), which of the following statements is correct? Oxygen Dissociation Curve.png Group of answer choices When a person in ventilating at rest, 75% of hemoglobin is still oxyhemoglobin The percent saturation of hemoglobin is higher at higher partial pressures of oxygen A decrease in the pH of the blood would promote unloading oxygen from the hemoglobin All of these are correctarrow_forwardFill in the blanks using the word bank to describe 02 and CO2 transport in the respiratory system. Words CAN be used more than once. Enhance(s) Reduced Hemoglobin Diffusion Carbaminohemoglobin will 02/CO2 Transport Inhibit Increase Chloride Shift Carbonic Acid Oxygen is transported from the Tissues Decrease oxygen. Plasma Carbonic Anhydrase to the in one of two ways: by binding to hemoglobin, creating. (HbO2), or by dissolving in plasma. Since oxygen has poor solubility in water, most oxygen molecules are transported via As oxygen leaves the lungs and enters the red blood cells, it binds to a hemoglobin (HHb) molecule which consequently forms Oxyhemoglobin (HbO2) and releases a hydrogen ion (H+), which will pH. An increase in H+ the unloading of oxygen from the blood to the Lungs Oxyhemoglobin Red Blood Cell(s) Bicarbonate to the (HbCO2), or as Carbon dioxide is transported from the dissolved in plasma, binding to hemoglobin as plasma. The process of carbon dioxide converting into…arrow_forward
- A patient is hyperventilating (breathing very quickly). Consider the consequences of this action on the carbon dioxide level in the blood. What can occur? respiratory alkalosis metabolic acidosis metabolic alkalosis respiratory acidosisarrow_forwardIn terms of acid/base balance, carbon dioxide represents an in the bodyObstructive respiratory pathologies result inof CO2 and would most likely cause a respiratoryarrow_forwardClassify each item as being associated with either hyperventilation or hypoventilation. Can be caused by obesity Can be caused by anxiety Hypocapnia can occur Can be caused by ascending to a high altitude Can be caused by bradypnea PO₂ levels increase and PCO₂ levels decrease in the alveoli O2 levels decrease and CO₂ levels increase in the alveoli Hypoventilation Hyperventilationarrow_forward
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