Essentials of Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780321919007
Author: Elaine N. Marieb
Publisher: PEARSON
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Question
Chapter 13, Problem 2MC
Summary Introduction
Introduction:
The diaphragm is the primary muscle responsible for the maintenance of thoracic cavity and controls the intrathoracic pressure. The inspiration and expiration process involves the rhythmic movement of the diaphragm. These movements alter the pressure within the thoracic cage and help in respiration. This brings a change in the rates of inspiration and expiration.
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Students have asked these similar questions
When you inhale, the diaphgram
A.
relaxes and moves up.
B.
relaxes and moves downward.
C.
contracts and moves upward.
D.
contracts and moves downward.
E.
is not involved in the breathing movements.
IT IS NOT D
The diaphragm and the external intercostal muscles are contracted. Choose the true statement or statements below. Pick all that apply.
a. Exhalation is occurring.
b. Inhalation is occurring.
c. Air flows down the pressure gradient from the atmosphere to the lungs.
d. Air flows down the pressure gradient from the lungs to the atmosphere.
When the diaphragm contracts (moves down), which of the following will occur in the
lungs?
Select one:
a. Volume will decrease, Air pressure will increase and expiration will oCcur.
b. Volume will increase, Air pressure will increase, and inhalation will occur.
c. Volume will increase, Air pressure will decrease, and inspiration will occur.
O d. Volume will increase, Air pressure will decrease, and expiration will occur.
Chapter 13 Solutions
Essentials of Human Anatomy & Physiology (11th Edition)
Ch. 13 - Prob. 1MCCh. 13 - Prob. 2MCCh. 13 - Prob. 3MCCh. 13 - Prob. 4MCCh. 13 - Prob. 5MCCh. 13 - Prob. 6MCCh. 13 - Prob. 7MCCh. 13 - Identify the respiratory structure which are...Ch. 13 - Prob. 9SAECh. 13 - 10. Why is it important that the trachea be...
Ch. 13 - Prob. 11SAECh. 13 - Prob. 12SAECh. 13 - Prob. 13SAECh. 13 - Identify the structural properties of alveoli that...Ch. 13 - Explain, giving examples, the difference between...Ch. 13 - Prob. 16SAECh. 13 - Prob. 17SAECh. 13 - Prob. 18SAECh. 13 - Prob. 19SAECh. 13 - Prob. 20SAECh. 13 - Prob. 21SAECh. 13 - Prob. 22SAECh. 13 - Explain why surfacrant is able to ensure that we...Ch. 13 - 24. Compare and contrast the signs and symptoms of...Ch. 13 - Prob. 25CAQCh. 13 - Why doesn’t Laney have to worry when her...Ch. 13 - 28. Mr. Alvarez bumped a bee’s nest while making...Ch. 13 - What are the respiratory problems a person living...Ch. 13 - Prob. 29CAQCh. 13 - Prob. 30CAQ
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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_forwardDuring inhalation, ________. a. the thoracic cavity expands d. the diaphragm relaxes c. atmospheric pressure declines d. the lungs deflatearrow_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
- 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_forwardContraction 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 lungsarrow_forwardWhen the diaphragm and external intercostal muscles contract, which of the following actions does NOT occur? A. Air moves into lungs B. The diaphragm moves inferiorly C. The intrapulmonary pressure decreases D. The intrapleural pressure increases.arrow_forward
- When considering the movement of air into the balloons (representing the lungs), which of the following would you have to do? a. pull down on the diaphragm mimicking the contraction of the diaphragm in inspiration b. push up the diaphragm mimicking the relaxation of the diaphragm in expiration c. push up on the diaphragm mimicking the contraction of the diaphragm in expirationarrow_forwardDuring 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 & Carrow_forwardIf the transpulmonary pressure equals zero,a. a pneumothorax has probably occurred.b. the lungs cannot inflate.c. elastic recoil causes the lungs to collapse.d. all of these apply.arrow_forward
- 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 activityarrow_forwardWhich of the following is the definition of residual volume? A. Volume of air remaining in the lungs after a maximal exhalation. B. Maximal volume that can be exhaled from end-expiratory position. C. Maximal volume expired after maximal inspiration. D. Volume in the lungs at maximal inflation.arrow_forwardA patient who breathes very slowly when wearing a low Flow of oxygen device would have: A. An increased concentration of oxygen in the lungs B. A decreased concentration of oxygen in the lungs C. There is no effect on oxygen concentration in the lungs D. There is a minimal if no effect on oxygen concentration in the lungsarrow_forward
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