Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 21.7, Problem 4QC
What do the central chemoreceptors trigger if arterial
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Chapter 21 Solutions
Human Anatomy & Physiology
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 - 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 - What drives the movement of gases?Ch. 21.3 - Prob. 7QCCh. 21.3 - Prob. 8QCCh. 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_forwardWhat is hypoxia? Why must arterial Po2 changesignificantly before it affects respiratory rate?arrow_forwardWhat are the side effects of Stimulation of the peripheral chemoreceptors?arrow_forward
- How will changes in arterial Po2 impact ventilation? Select the one most accurate response. Small changes in arterial Po2 will result in fine changes to VÊ in order to maintain relatively stable arterial Po2. O Arterial Po2 will not affect ventilation unless it drops below 60mmHg. O₂ cannot cross the blood/brain barrier, thus cannot interact with central chemoreceptors to have an impact on ventilation. O Breathing 100% O2 at atmospheric pressure will greatly reduce the urge to breathe.arrow_forwardWhere are central chemoreceptors and peripheralchemoreceptors? Which are most important for regulatingblood pH and CO2 level? How does this change duringintense exercise?arrow_forwardcan you explain this question in terms of chemoreceptors?arrow_forward
- You have both peripheral chemoreceptors (aortic arch and carotid bodies) and central chemoreceptors (medulla). You were informed earlier that the central chemoreceptors are the primary sensors for blood CO2. Both sets of chemoreceptors detect the concentration of H+ in blood or cerebral spinal fluid (CSF). Why do the central chemoreceptors detect blood PCO2 levels while the peripheral chemoreceptors are only sensitive to total blood H+ concentration?arrow_forwardAs a result of the upper airway obstruction and subsequent ventilation-perfusion ratio, the parameters listed below change as follows:A. PA(o2) : ___increased; ___decreased; ____remained the sameB. PA(co2) : ___increased; ___decreased; ____remained the sameC. PC(o2) : ___increased; ___decreased; ____remained the sameD. PC(co2) : ___increased; ___decreased; ____remained the sameE. pH : ___increased; ___decreased; ____remained the samearrow_forwardExplain why chemoreceptors are important for the regulation ofventilation.arrow_forward
- Regarding central chemoreceptors, if H+ ions are unable to cross the blood-brain barrier, how does the brain detect a change in the body's pH?arrow_forwardA decrease in arterial PO2 to 60mmHg will result in which of the following? a) Stimulation of peripheral chemoreceptors only and an increase in ventilation O b) Stimulation of central chemoreceptors only and a decrease in ventilation O ) Stimulation of central and peripheral chemoreceptors and an increase in ventilation d) Stimulation of central and peripheral chemoreceptors and a decrease in ventilationarrow_forwardWhich of the following is not a stimulus of the peripheral chemoreceptors? Increased arterial PCO2 Increased arterial PO2 None of the above stimulate the peripheral chemoreceptors Drop in pHarrow_forward
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