Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 18.2, Problem 12CC
How would an obstruction of the airways affect alveolar ventilation, arterial PCO2, and the body’s pH?
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75. In a healthy person who is standing, which of the following best characterizes findings in the apical regions of the lungs if compared with the basal regions?
Ventilation/Perfusion Ratio
Compliance
Alveolar PO 2
A)
B)
C)
D
OE)
No change
No change
↑
↓
↑
↑
no change
↑
↓
no change
no change
no change
↑
↑
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?
How can higher altitudes affect the respiratory rate? What happens if a person drinks alcohol after climbing up a mountain? Will this result to respiratory alkalosis or acidosis?
Chapter 18 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 18.1 - Cellular metabolism review: which of the following...Ch. 18.1 - Why doesnt the movement of oxygen from the alveoli...Ch. 18.1 - If nitrogen is 78% of atmospheric air, what is the...Ch. 18.1 - At the summit of Mt. Everest, an altitude of 8850...Ch. 18.1 - Prob. 5CCCh. 18.1 - If alveolar ventilation increases, what happens to...Ch. 18.1 - True or false? Plasma with a PO2 of 40 mm Hg and a...Ch. 18.1 - A saline solution is exposed to a mixture of...Ch. 18.2 - Can a person breathing 100% oxygen at sea level...Ch. 18.2 - What effect does hyperventilation have on the...
Ch. 18.2 - A muscle that is actively contracting may have a...Ch. 18.2 - How would an obstruction of the airways affect...Ch. 18 - List five factors that influence the diffusion of...Ch. 18 - Prob. 2RQCh. 18 - Prob. 3RQCh. 18 - Describe the structure of a hemoglobin molecule....Ch. 18 - Prob. 5RQCh. 18 - Describe the chemoreceptors that influence...Ch. 18 - Describe the protective reflexes of the...Ch. 18 - What causes the exchange of oxygen and carbon...Ch. 18 - List five possible physical changes that could...Ch. 18 - Concept map: Construct a map of gas transport...Ch. 18 - Prob. 11RQCh. 18 - Prob. 12RQCh. 18 - Prob. 13RQCh. 18 - Define hypoxia, COPD, and hypercapnia.Ch. 18 - Why did oxygen-transporting molecules evolve in...Ch. 18 - Draw and label the following graphs: a. the effect...Ch. 18 - Prob. 17RQCh. 18 - Prob. 18RQCh. 18 - Create reflex pathways (stimulus, receptor,...Ch. 18 - Prob. 20RQCh. 18 - Which person carries more oxygen in his blood? a....Ch. 18 - What would happen to each of the following...Ch. 18 - In early research on the control of rhythmic...Ch. 18 - Prob. 24RQCh. 18 - Prob. 25RQCh. 18 - Prob. 26RQCh. 18 - Prob. 27RQCh. 18 - Prob. 28RQCh. 18 - Adolph Fick, the nineteenth-century physiologist...Ch. 18 - Prob. 30RQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which is the order of airflow during inhalation? a. nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli b. nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli c. nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli d. nasal cavity, trachea, larynx, bronchi, bronchioles, alveoliarrow_forwardWhat drives oxygen from the air spaces in alveoli, through tissue fluid, and across capillary epithelium? What drives carbon dioxide in the opposite direction?arrow_forwardHow do nerve impulses from the brain regulate ventilation of the lungs? How are the rate and depth of breathing controlled?arrow_forward
- What reactions enhance the transport of carbon dioxide throughout the body? How is carbon dioxide moved out of the body?arrow_forwardWhat are some advantages of gas exchange in air over gas exchange in water?arrow_forwardHow does hemoglobin help maintain the oxygen partial pressure gradient during gas transport in the body?arrow_forward
- 75. In a healthy person who is standing, which of the following best characterizes findings in the apical regions of the lungs if compared with the basal regions? Compliance Alveolar PO2 A) B) E) Ventilation/Perfusion Ratio No change No change ↑ ↓ ↑ ↑ no change ↑ ↓ no change ↓ no change no change ↑ ↑arrow_forwardWhere in the body is the partial pressure of carbon dioxide the highest? Select one: a) Alveolar air b) Systemic venous blood c) Tissue fluids d) Tissue cells e) Pulmonary venous bloodarrow_forwardHow would blockage of the trachea affect blood pH?arrow_forward
- what is the mechanism by which breathing contributes to the body's control of blood pH? Which set of chemoreceptors are primarily involved?arrow_forward1) 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.arrow_forward93. In a healthy person who is standing, which of the following best characterizes findings in the apical regions of the lungs if compared with the basal regions? Compliance Alveolar PO, O A) O B) O C) OD) O E) Ventilation/Perfusion Ratio No change No change no change ↑ no change no change no change ↑arrow_forward
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