Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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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
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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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
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- Air moves into the alveoli as a result of the: (A)Decreased pressure in the chest cavity (B) Relaxation of the diaphragm (C) Rising pressure in the alveoli (D) Rising pressure in the chest cavityarrow_forwardThe ventral respiratory group functions in Choose from the following: (A) normal inspiration / forced expiration (B) forced inspiration / passive expiration (C) forced inspiration / forced expirationarrow_forwardOne technique for artificial respiration is mouth-to-mouth resuscitation. The rescuer takes a deep breath, blows air into the patient’smouth, and then lets air flow out. The process is repeated. Explain thefollowing: (1) Why do the patient’s lungs expand? (2) Why does airmove out of the patient’s lungs? (3) What effect do the Po2 and thePco2 of the rescuer’s air have on the victim?arrow_forward
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