Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 48, Problem 1A
When you take a deep breath, your stomach moves out because
a. swallowing air increases the volume of the thoracic cavity.
b. your stomach shouldn’t move out when you take a deep breath because you want the volume of your chest cavity to increase, not your abdominal cavity.
c. contracting your abdominal muscles pushes your stomach out, generating negative pressure in your lungs.
d. when your diaphragm contracts, it moves down, pressing your abdominal cavity out.
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Chapter 48 Solutions
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- 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_forwardThe primary function of the pleural membranes is ____ A. to decrease friction and allow the lungs to move within the thoracic cavity is B. to decrease surface tension by producing surfactant C. to prevent the lungs from putting pressure on the heart and surrounding vessels D. to prevent respiratory infectionsarrow_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
- Choose the correct description of inhalation. a. Air is forced into the lungs and then the diaphragm moves down b. Air is forced into the lungs and then the diaphragm moves up c. The diaphragm moves up making less space, and air pushes in. d. The diaghragm moves down, making more space and air is pulled in.arrow_forwardThe trachea has rings of cartilage to: a. Allow the trachea to close when air is not present b. Keep the trachea open for continuous air flow c. Allow the trachea to close when food is not present d. Keep the trachea open for continuous food flowarrow_forwardHow does the Diaphrgan facilitate breathing? a.) To breathe in, the diaphragam moves caudally to decrease the volume of the thoracic cavity. b.) To breathe in, the diaphragam moves cranially to increase the volume of the thoracic cavity. c.) To breathe in, the diaphragam moves caudally to increase the volume of the thoracic cavity. d.) To breathe in, the diaphragam moves cranially to decrease the volume of the thoracic cavity.arrow_forward
- Would the respiration rate be different for a person who had just exercised instead of sitting in the lab? a. No, the respiration rate would be the same. b. Yes, the respiration rate would be slower because the exercise slows respiration and oxygen uptake. c. Yes, the respiration rate would be faster since the person needed more oxygen while exercising.arrow_forwardThe two openings of the pharynx, one leading to trachea and the other leading to oesophagus, lie very close to each other. Yet food we swallow normally does not enter into our trachea. Why?arrow_forwardHow would paralysis of the diaphragm alter inspiration? a. It would prevent contraction of the intercostal muscles. b. It would prevent inhalation because the intrapleural pressure would not change. c. It would decrease the intrapleural pressure and allow more air to enter the lungs. d. It would slow expiration because the lung would not relax.arrow_forward
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