HUMAN ANATOMY PKG >CUSTOM<
8th Edition
ISBN: 9781323572528
Author: Marieb
Publisher: Pearson Custom Publishing
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Question
Chapter 22, Problem 1RQ
Summary Introduction
To determine:
The event that occurs after the contraction of the inspiratory muscles.
Introduction:
The external intercostal muscles are attached to the walls of the thoracic cavity. Contraction or relaxation of these causes changes the volume of the thoracic cavity and lungs. There are changes in the rib cage as well as the dome-shaped diaphragm and finally in the pressure of air within the pleural cavity hence, completing the process of inspiration. The inspiratory muscles include a group of muscles associated with the breathing process.
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When the inspiratory muscles contract, (a) only the lateral dimension of the thoracic cavity increases, (b) only the anteroposterior dimension of the thoracic cavity increases, (c) the volume of the thoracic cavity decreases, (d) both the lateral and the anteroposterior dimensions of the thoracic cavity increase, (e) the diaphragm bulges superiorly.
When the diaphragm contracts, it tenses and moves inferiorly, causing(a) an increase in the volume of the thoracic cavity. (b) a decrease in the volume of the thoracic cavity. (c) decreased pressure on the contents of the abdominopelvic cavity. (d) increased pressure in the thoracic cavity.
Select the best answer or answers from the choices given: When the inspiratory muscles contract, (a) the size of the thoracic cavity increases in diameter, (b) the size of the thoracic cavity increases in length, (c) the volume of the thoracic cavity decreases, (d) the size of the thoracic cavity increases in both length and diameter.
Chapter 22 Solutions
HUMAN ANATOMY PKG >CUSTOM<
Ch. 22 - Which respiratory structures are lined with...Ch. 22 - Prob. 2CYUCh. 22 - Prob. 3CYUCh. 22 - Prob. 4CYUCh. 22 - Prob. 5CYUCh. 22 - Prob. 6CYUCh. 22 - At what level of the bronchial tree are cartilage...Ch. 22 - Prob. 8CYUCh. 22 - Name the fissure that separates the superior and...Ch. 22 - In what order, from superior to inferior, do the...
Ch. 22 - Would a stab wound in the midclavicular line just...Ch. 22 - How does contraction of the diaphragm affect the...Ch. 22 - What will happen to the lung in the stab wound...Ch. 22 - Prob. 14CYUCh. 22 - Prob. 15CYUCh. 22 - Prob. 16CYUCh. 22 - Prob. 17CYUCh. 22 - Prob. 18CYUCh. 22 - Prob. 1RQCh. 22 - Prob. 2RQCh. 22 - Prob. 3RQCh. 22 - Prob. 4RQCh. 22 - Match the proper type of lining epithelium from...Ch. 22 - Match the air tube in column B with the lung...Ch. 22 - Prob. 7RQCh. 22 - Prob. 8RQCh. 22 - A serous cell of a gland secretes (a) the slippery...Ch. 22 - The function of type I alveolar cells is to (a)...Ch. 22 - Prob. 11RQCh. 22 - Prob. 12RQCh. 22 - Prob. 13RQCh. 22 - Prob. 14RQCh. 22 - Prob. 15RQCh. 22 - The three terms choanae, conchae, and carina are...Ch. 22 - Prob. 17RQCh. 22 - Sketch a picture of the right and left lungs in...Ch. 22 - Prob. 19RQCh. 22 - Prob. 20RQCh. 22 - Prob. 1CRCAQCh. 22 - Prob. 2CRCAQCh. 22 - Prob. 3CRCAQCh. 22 - Prob. 4CRCAQCh. 22 - Prob. 5CRCAQCh. 22 - Prob. 6CRCAQ
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