Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Textbook Question
Chapter 10, Problem 3RQ
At birth, the number of alveoli represents; about how much of the total adult gas exchange units?
A. 10 percent
B. 20 percent
C. 30 percent
D. 40 percent
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At birth, the number of alveoli represents about hots much of the total adult gas exchange units? A. 10 percent B. 20 percent C. 30 percent D. 40 percent
Which of the following best describes the gas exchange that occurs in the lungs?
A. carbon dioxide diffuses into the capillaries from the alveoli
B. oxygen diffuses from the capillaries into the alveoli
C. carbon dioxide diffuses from the capillaries into the alveoli
D. oxygen diffuse into the alveoli from the capillaries
If the radius of a bronchial airway, which has a driving pressure of 2 mm Hg, is reduced by 16 percent of its original size, what will be the new driving pressure required to maintain the same gas flow through the bronchial airway? A. 4 mm Hg B. 8 mm Hg C. 12 mm Hg D. 16 mm Hg
Chapter 10 Solutions
Cardiopulmonary Anatomy & Physiology
Ch. 10 - 1. During the embryonic period, the lungs first...Ch. 10 - Prob. 2RQCh. 10 - 3. At birth, the number of alveoli represents;...Ch. 10 - 4. The number of alveoli continues to increase...Ch. 10 - Prob. 5RQCh. 10 - 6. The average in the umbilical vein during fetal...Ch. 10 - Prob. 7RQCh. 10 - In the placenta, maternal blood is continuously...Ch. 10 - In the fetal circulation, once blood enters the...Ch. 10 - Prob. 10RQ
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- The respiratory system_______. a. provides body tissues with oxygen b. provides body tissues with oxygen and carbon dioxide c. establishes how many breaths are taken per minute d. provides the body with carbon dioxidearrow_forward4. The number of alveoli continues to increase until about A. 6 years of age B. 8 years of age C. 10 years of age D. 12 years of agearrow_forwardWhich 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_forward
- Gas exchange occurs at the _______. a. two bronchi b. pleural sacs c. alveoli d. both b and carrow_forwardwhich of these variables would NOT affect the ability of a gas to diffuse across the respiratory membrane going from the alveolous to the blood a. partial pressure of the gas in question b. hemoglobin count c. surface area of the alveolous d. dissusion distancearrow_forwardWhich part of the airway has the greatest amount of smooth muscle? A. Trachea B. Primary bronchi C. Alveoli D. Bronchioles E. Alveolar ductsarrow_forward
- In an infant born prematurely, surfactant production may have not been adequate to maintain alveoli open after birth. What would that do to the compliance of the lungs? a. decrease it; making it more difficult to move air in and out the lungs b. increase it; making it more difficult to more air in and out the lungs c. keeps it the same would be seen with adequate surfactantarrow_forwardVentilation in the capillaries is matched to perfusion. This means that a. blood pressure from capillaries must match the pressure from the arterioles b. gas pressure in the alveolar must match the pressure in the bronchioles c. ventilation is never profuse enough d. ventilation in the alveolar must match the blood flow passing over those alveiolararrow_forwardThe exchange of gases that occurs between the alveolar sac and the pulmonary capillary a. forced inhalation b. internal respiration c. eternal respiration d. forced exhalationarrow_forward
- Gas exchange between systemic blood vessels and the tissues is called a. Tubular secretion b. External respiration c. Pulmonary ventilation d. Internal respirationarrow_forwardWhich of the following statements are true of the alveoli and pulmonary capillaries? (Read carefully and select all of the correct statements.) A. Blood coming into the pulmonary capillaries is low in O2 and high in CO2. B. The alveolar walls are one cell in thickness.C. The total alveoli provide a large surface area for gas exchange.D. The pulmonary capillaries are made of simple squamous epithelium. E. Blood leaving the pulmonary capillaries will return to the left atrium of the heart.arrow_forwardWhich of the following occurs for expiration to occur? a. the thoracic volume decreases b. the thoracic volume increases c. the intrapulmonary pressure decrease compared to atmospheric air pressure d. the intrapleural pressure becomes more negativearrow_forward
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