Campbell Essential Biology with Physiology (5th Edition)
5th Edition
ISBN: 9780321967671
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Question
Chapter 23, Problem 10SQ
Summary Introduction
Introduction: Breathing is the process of respiration that includes inhaling oxygen from air to lungs and exhaling carbon dioxide from lungs into air. This is referred to as gas exchange that takes place in air sacs of lungs known as alveoli. It includes airways, lungs, blood vessel, and the muscles to enable breathing.
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Students have asked these similar questions
Contraction of the diaphragm and external intercostal muscles is an active process leads to:
a.
Decrease alveolar pressure in the lungs.
b.
Lung Expand.
c.
Thorax epand.
d.
All of the above are correct.
e.
Air flow into the lungs
During expiration:
A. The diaphragm is relaxed to the make the thoracic cavity larger.
B. The diaphragm is contracted to make the thoracic cavity smaller.
C. The inter intercostals are contracted, making the thoracic cavity smaller.
D. Both B & C
Increasing the size of the thoracic cavity causes the alveolar pressure to:
A. Decrease
B. Increase
C. Stay the Same
D. None of the above
Chapter 23 Solutions
Campbell Essential Biology with Physiology (5th Edition)
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- Oxygen 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_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_forwardThe 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_forward
- During inhalation, ________. a. the thoracic cavity expands d. the diaphragm relaxes c. atmospheric pressure declines d. the lungs deflatearrow_forwardGas exchange occurs at the _______. a. two bronchi b. pleural sacs c. alveoli d. both b and carrow_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
- 18. The bronchial arteries nourish the tracheobronchial tree down to, and including, which of the following? A. Respiratory bronchioles B. Segmental bronchi C. Terminal bronchioles D. Subsegmental bronchiarrow_forwardThe 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_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
- 4. 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_forwardDue to its partial pressure gradient, carbon dioxide diffuses from cells into tissue fluid and into the ________; in the lungs, carbon dioxide diffuses into the ________. a. alveoli; bronchioles b. bloodstream; bronchioles c. alveoli; bloodstream d. bloodstream; 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
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