Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Chapter 21.5, Problem 3QC
Why is the S shape of the oxygen-hemoglobin dissociation curve important?
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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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- How does hemoglobin help maintain the oxygen partial pressure gradient during gas transport in the body?arrow_forwardWhy is it advantageous for the oxygen-hemoglobindissociation curve to shift to the left in the lungs and to theright in tissues?arrow_forwardName 3 conditions (ex: pO2) in which the oxygen dissociation curve will shift to the left. Additionally, when there is such a shift to the left, does that mean that hemoglobin's affinity for O2 has increased or decreased?arrow_forward
- Considering the quantity of hemoglobin in an erythrocyte and the oxygen-binding properties of hemoglobin, calculate how many molecules of oxygen one erythrocyte could carry?arrow_forwardO E-If answers (1), (2), (3) and (4) are TRUE Which of the following is NOT true about the liver lobule? * (1) Bile canaliculi transport bile towards the bile ducts located at the corners of the liver lobule. (2) Sinusoidal capillaries drain into the central vein. (3) Liver lobules are capable of producing plasma proteins such as albumin. (4) The portal arteriole takes blood to the liver lobule, while the portal venule takes blood away from the liver lobule. O A - If answers (1), (2) and (3) are TRUE B - If answers (1) and (3) are TRUE O C- If answers (2) and (4) are TRUE O D- If only answer (4) is TRUE O E- If answers (1), (2), (3) and (4) are TRUE Which of the following is NOT true with regards the oxygen-hemoglobin dissociation curve? * 27°C ere to searcharrow_forwardWhat is the critical amino acid difference between the beta-chain and the gamma-chain of hemoglobin? How does this difference affect the hemoglobin binding to oxygen?arrow_forward
- In the text, we learned that BPG is abundantly present in erythrocytes to greatly reduce the affinity of hemoglobin for oxygen. When 2,3-BPG binds to deoxyhemoglobin, it acts to stabilize the low oxygen affinity state (T state) of the oxygen carrier. What would happen to hemoglobin if the BPG were removed? Would our body still be able to efficiently deliver oxygen to the tissues?arrow_forwardUnder appropriate conditions, hemoglobin dissociates into its four subunits. The isolated α subunit binds oxygen, but the O2 -saturation curve ishyperbolic rather than sigmoid. In addition, the binding of oxygen to the isolated α subunit is not affected by the presence of H+, CO2 , or BPG. What do these observations indicate about the source of the cooperativity in hemoglobin?arrow_forwardDescribe the differences in the oxygen-binding properties of hemoglobin and myoglobin.arrow_forward
- How does 2,3-BPG lower the oxygen affinity of hemoglobin so significantly?arrow_forwardDescribe the structure of hemoglobin and How does the structure of hemoglobin allow it to combine with oxygen?arrow_forwardWhat is the molecular basis for the difference in the electrophorentic pattern between normal hemoglobin A and hemoglobin S?arrow_forward
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