Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 25SAQ
(a) Define hyperventilation. (b) If you hyperventilate, do you retain or expel more carbon dioxide? (c) What effect does hyperventilation have on blood pH?
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(a) Define hyperventilation. (b) If you hyperventilate, do you retain or expel more carbon dioxide? (c) What effect does hyperventilation have on blood pH?
When individuals are hyperventilating, they are told to breathe into a paper bag or into their cupped hands. (a) Explain why this increases blood carbon dioxide levels. (b) What will this do to the breathing rate?
1) During alveolar HYPERventilation, levels of blood CO2 drop while blood O2 is elevated. What reflexive responses will this stimulate from the CPG?
a) Increased DRG and VRG activity in the medulla, stimulating I and E motor neurons.
b) Decreased DRG and VRG activity in the medulla, stimulating I and E motor neurons.
c) Decreased DRG and VRG activity in the medulla, inhibiting I and E motor neurons.
d) Increased DRG and VRG activity in the medulla, inhibiting I and E motor neurons.
Chapter 21 Solutions
Anatomy & Physiology (6th Edition)
Ch. 21.1 - Prob. 1CYUCh. 21.1 - Which part of the pharynx houses the pharyngeal...Ch. 21.2 - Which structure seals the larynx when we swallow?Ch. 21.2 - Which structural features of the trachea allow it...Ch. 21.2 - What features of the alveoli and their respiratory...Ch. 21.2 - A 3-year-old boy is brought to the emergency...Ch. 21.3 - The lungs are perfused by two different...Ch. 21.3 - Prob. 8CYUCh. 21.4 - What is the driving force for pulmonary...Ch. 21.4 - What causes the intrapulmonary pressure to...
Ch. 21.4 - What causes the partial vacuum (negative pressure)...Ch. 21.4 - Premature infants often lack adequate surfactant....Ch. 21.5 - Explain why slow, deep breaths ventilate the...Ch. 21.5 - Prob. 14CYUCh. 21.6 - You are given a sealed container of water and air....Ch. 21.6 - PO2 in the alveoli is about 56 mm Hg lower than in...Ch. 21.6 - Suppose a patient is receiving oxygen by mask. Are...Ch. 21.7 - Prob. 18CYUCh. 21.7 - What is the relationship between CO2 and pH in the...Ch. 21.7 - The dotted lines in the two graphs below represent...Ch. 21.8 - Which brain stem respiratory area is thought to...Ch. 21.8 - Prob. 22CYUCh. 21.9 - An injured soccer player arrives by ambulance in...Ch. 21.9 - Prob. 24CYUCh. 21.10 - What distinguishes the obstruction in asthma from...Ch. 21 - Cutting the phrenic nerves will result in (a) air...Ch. 21 - Which of the following laryngeal cartilages is/are...Ch. 21 - Prob. 3MCCh. 21 - The detergent-like substance that keeps the...Ch. 21 - Which of the following determines the direction of...Ch. 21 - When the inspiratory muscles contract, (a) the...Ch. 21 - The nutrient blood supply of the lungs is provided...Ch. 21 - Oxygen and carbon dioxide are exchanged in the...Ch. 21 - Which of the following would not normally be...Ch. 21 - Most oxygen carried in the blood is (a) in...Ch. 21 - Which of the following has the greatest...Ch. 21 - In mouth-to-mouth artificial respiration, the...Ch. 21 - Prob. 13MCCh. 21 - Prob. 14MCCh. 21 - Damage to which of the following would most likely...Ch. 21 - Prob. 16MCCh. 21 - Trace the route of air from the nares to an...Ch. 21 - (a) Why is it important that the trachea is...Ch. 21 - Briefly explain the anatomical reason why most men...Ch. 21 - The lungs are mostly passageways and elastic...Ch. 21 - Describe the functional relationships between...Ch. 21 - Discuss how airway resistance, lung compliance,...Ch. 21 - (a) Differentiate clearly between minute...Ch. 21 - Prob. 24SAQCh. 21 - (a) Define hyperventilation. (b) If you...Ch. 21 - Prob. 1CCSCh. 21 - Prob. 2CCSCh. 21 - Barbara Joley was in the bus that was hit...Ch. 21 - Barbara Joley was in the bus that was hit...Ch. 21 - Prob. 5CCSCh. 21 - Prob. 6CCSCh. 21 - Prob. 7CCS
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- Hyperventilation will result in Chooe from the following: (A) loss of carbon dioxide molecules from the blood (B) decrease in the number of arterial hydrogen ions (C) rise in pH values (D) all of the abovearrow_forwardIf alveolar ventilation is 4200 mL/min, respiratory frequency is 12 breaths per minute, and tidal volume is 500 mL, what is the anatomical-dead-space ventilation? (a) 1800 mL/min (c) 350 mL/min (b) 6000 mL/min (d) 1200 mL/minarrow_forwarda.) What is the impact on internal respiration in your alveoli if the partial pressure of the oxygen gas in the air goes down? and the partial pressure of the carbon dioxide gas goes up? b.) What would happen as a result of both of these happening?arrow_forward
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