Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Chapter 9, Problem 2RQ
Which of the following has the most powerful effect on the respiratory components of the medulla?
A. Decreased O2
B. Increased H+
C. Decreased CO2
D. Increased pH
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Which of the following is the primary method by which carbon dioxide is transported to the lungs?
a. Dissolved in plasma
b. Bound to hemoglobin
c. As carbon monoxide
d. As bicarbonate
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
Which of the following situations will cause an increase in airway resistance?
a. Increase lung volume
b. Decrease mucus production
c. Increase sympathetic activity
d. Increase parasympathetic activity
Chapter 9 Solutions
Cardiopulmonary Anatomy & Physiology
Ch. 9 - The respiratory components of the medulla consist...Ch. 9 - 2. Which of the following has the most powerful...Ch. 9 - Prob. 3RQCh. 9 - Prob. 4RQCh. 9 - When the systemic blood pressure increases, the...Ch. 9 - The peripheral chemoreceptors are significantly...Ch. 9 - Stimulation of the peripheral chemoreceptors can...Ch. 9 - Suppression of the peripheral chemoreceptors...Ch. 9 - Prob. 9RQCh. 9 - Prob. 10RQ
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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
- 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_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_forwardWhen you sneeze, abdominal muscles abruptly contract, pushing your diaphragm upward. Given the discussion of the respiratory cycle in Section 10.4, why does this change expel air out your nose?arrow_forward
- The respiratory components of the medulla consist of which of the following? Dorsal respiratory group Apneustic center Ventral respiratory group Pneumotaxic center 1 only 2 only 1 and 3 only 2 and 4 onlyarrow_forwardOxygen in air must diffuse across______ to enter the blood. a. pleural sacs b. alveolar sacs c. a moist respiratory surface d. both b and carrow_forwardUnderwater, we humans cant compete with whales and other air-breathing marine mammals, which can stay submerged for extended periods. At the beach one day you meet a surfer who tells you that special training could allow her to swim underwater without breathing for an entire hour. From what you know of respiratory physiology, explain why she is mistaken.arrow_forward
- A smoker develops damage to several alveoli that then can no longer function. How does this affect gas exchange?arrow_forwardA contraction of the smooth muscle in the walls of the bronchi and bronchioles that tighten and squeeze the airway shut is known as a/an ______________arrow_forwardIn the diagram below, label the parts of the respiratory system and the structures that enclose some of its partsarrow_forward
- Which of the following is NOT a determinant of gas exchange as described by Fick's Law? a. Steepness of the concentration gradient b. Number of ion channels in alveolar membrane c. Thickness of the alveolar membrane d. Permeability of the alveolar membrane to gases e. Surface area of the alveolar membranearrow_forwardWHich of the following finding at the apex best explains why ventilation-perfusion ratios are higher at the apex than base of a normal upright lungs? a. Alveolar Po2 is higher b. Alveoli contains more elastin and less collagen c. Alveoli have less surfacant d. Change in pleural pressure with each breathe is higher e. Perfusion is lowerarrow_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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