Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 1AYKA
When a person hyperventilates, what happens to his or her blood pH? A person who is hyperventilating is often told to breathe into a paper bag. Why might this help to correct the pH imbalance?
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When a person hyperventilates, what happens to his or her blood pH? A person who is hyperventilating is often told to breathe into a paper bag. Why might this help to correct the pH imbalance?
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; increase
What happens to blood pH when blood CO2 levels go upor down? What causes this change?
Chapter 21 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 21.1 - What are the main structures of the respiratory...Ch. 21.1 - 2. Is the larynx part of the upper or lower...Ch. 21.1 - Where are alveoli? What is their basic function?Ch. 21.1 - 4. List and define the four processes that make...Ch. 21.1 - 5. How does the respiratory system contribute to...Ch. 21.1 - List and describe four functions of the...Ch. 21.2 - Match the following terms with the correct...Ch. 21.2 - 2. Describe the external and internal structure...Ch. 21.2 - What happens to the glottis and the pitch of the...Ch. 21.2 - 4. What is the function of the tracheal mucosa?
Ch. 21.2 - How does the epithelium of the bronchial tree...Ch. 21.2 - Trace the pathway from the primary bronchi to the...Ch. 21.2 - 7. What structures make up the respiratory...Ch. 21.2 - Explain the structure of the pleural cavities.Ch. 21.3 - What drives the movement of gases?Ch. 21.3 - Prob. 2QCCh. 21.3 - 3. What drives the movement of gases during...Ch. 21.3 - What does the intrapleural pressure prevent under...Ch. 21.3 - 5. How are inspiration and expiration achieved?
Ch. 21.3 - 6. What is airway resistance? What is the main...Ch. 21.3 - How does surfactant decrease surface tension?Ch. 21.3 - 8. What is pulmonary compliance? What three...Ch. 21.3 - 9. What are three measurable pulmonary volumes?
Ch. 21.3 - 10. What is the vital capacity?
Ch. 21.4 - 1. How does the pressure gradient between two gas...Ch. 21.4 - Prob. 2QCCh. 21.4 - 3. What takes place during pulmonary gas...Ch. 21.4 - Prob. 4QCCh. 21.4 - Prob. 5QCCh. 21.4 - What are three factors that influence the...Ch. 21.5 - How is the majority of oxygen transported through...Ch. 21.5 - How do temperature, pH, PCO2, and BPG affect Hbs...Ch. 21.5 - 3. Why is the S shape of the oxygen-hemoglobin...Ch. 21.5 - What are the three ways in which the body...Ch. 21.5 - Prob. 5QCCh. 21.5 - Prob. 6QCCh. 21.6 - 1. Which steps of respiration rely on partial...Ch. 21.7 - 1. Which collection of neurons generates the...Ch. 21.7 - What are the functions of the dorsal and ventral...Ch. 21.7 - 3. Where are the central chemoreceptors located?...Ch. 21.7 - What do the central chemoreceptors trigger if...Ch. 21.7 - Prob. 5QCCh. 21.8 - 1. What are the differences between obstructive...Ch. 21.8 - 2. What are the three subtypes of COPD? What is...Ch. 21.8 - Prob. 3QCCh. 21 - Which of the following are functions of the...Ch. 21 - Prob. 2CYRCh. 21 - 3. Mark the following statements as true or false....Ch. 21 - Prob. 4CYRCh. 21 - 5. Fill in the blanks: The structures that vibrate...Ch. 21 - Prob. 6CYRCh. 21 - Prob. 7CYRCh. 21 - Prob. 8CYRCh. 21 - Match each term with the correct definition....Ch. 21 - Prob. 10CYRCh. 21 - Which of the following does not affect the...Ch. 21 - Prob. 12CYRCh. 21 - Fill in the blanks: When the alveolar PO2...Ch. 21 - Prob. 14CYRCh. 21 - Match the following terms with the correct...Ch. 21 - 16. Fill in the blanks: Hyperventilation causes...Ch. 21 - The basic rhythm for breathing is maintained by...Ch. 21 - Prob. 18CYRCh. 21 - Prob. 19CYRCh. 21 - Prob. 20CYRCh. 21 - Prob. 1CYUCh. 21 - Prob. 2CYUCh. 21 - Prob. 3CYUCh. 21 - Prob. 4CYUCh. 21 - 1. When a person hyperventilates, what happens to...Ch. 21 - Prob. 2AYKACh. 21 - Prob. 3AYKACh. 21 - Prob. 4AYKACh. 21 - 5. Mrs. Jordan is brought to the emergency room by...Ch. 21 - What happens to the metabolic rate of skeletal...
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- Figure 39.20 The kidneys are responsible for removing excess H+ ions from the blood. If the kidneys fail, what would happen to blood pH and to hemoglobin affinity for oxygen?arrow_forwardConsidering the body’s pH balance is impacted by oxygen intake, why would the pH balance of blood plasma increase with rapid breathing? Conversely, why would the pH balance of blood plasma decrease if a person holds their breath?arrow_forwardrespiratory failure refers to inadequate ventilation to provide oxygen to the tissues . How would the pH change in the respiratory failure ?arrow_forward
- Which of the following statements is true for Bohr effect: a. Bohr effect describes carbon monoxide poisoning. b. Bohr effect prevents oxygen binding to hemoglobin. c. Bohr effect allows effective oxygen discharge in tissues due to higher acidity (decreased pH) than in lungs. d. Bohr effect allows effective oxygen discharge in tissues due to lower acidity (increased pH) than in lungs.arrow_forwardTwo of the key carbonic anhydrases are in the muscles and in the lungs. What would you expect the major difference would be between these carbonic anhydrases?arrow_forwardHow does a decrease in blood pH affect respiratory rate?How does a decrease in CO2 affect respiratory rate?arrow_forward
- What are the most two important gases that must have a normal concentration inside the body? a.)Carbon dioxide and Hydrogen b.)Carbon dioxide and Oxygen c.)Hydroxide and Carbon d.)Hydrogen and Nitrogenarrow_forwardDivers who go to great depths in the ocean experience large differences in pressure between the surface and their final destinations below the surface. At times, they have to avoid quick changes in pressure because of the effects on the solubility of nitrogen in their blood. If the solubility decreases quickly, then gas bubbles can form in the person’s blood, causing a dangerous condition called “the bends.” In one or two sentences, state whether you would expect the condition to be a greater hazard for divers as they dive down or as they return to the surface. Then, explain your prediction in terms of the solubility of gases in liquids at different pressures.arrow_forwardHow does hypoventilation affect blood pH? In your response, explain the importance of CO2 levels, and what the CO2 does to the blood.arrow_forward
- What effect is observed on the pH of the blood in each of the following cases? a. [HCO 3−] decreases.c. [CO 2] increases. b. [HCO 3−] increases.d. [CO 2] decreases.arrow_forwardAnatomy and Physiology Rebecca is found to have acidosis. She has elevated PCO2 and [HCO3]. Which of the following is false? A. her acidosis was caused from excess CO2 reacting with water to form carbonic acid B. this is a metabolic acidosis C. her blood pH is lower than normalarrow_forwardCarbon dioxide dissolved in body fluids has a pronounced effect on pH.(a) Does pH go up or down when carbon dioxide dissolves in these fluids? Does this change indicate higher or lower acidity?(b) What does a blood gas analysis measure?arrow_forward
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