Term
Surfactant facilitates alveolar ventilation by |
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Definition
decreasing the surface tension between water molecules on the lining of the alveoli. |
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Term
During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli will |
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Definition
decrease below atmospheric pressure, causing air to move into his lungs. |
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Term
Physiological dead air space is anatomic dead space plus |
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Definition
the volume of any alveoli where gas exchange is diminished. |
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Term
As the result of an asthmatic attack, |
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Definition
ventilation is inadequate to oxygenate blood. |
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Term
During exercise, the oxygen-hemoglobin dissociation curve |
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Definition
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Term
Mr. Jones has a blood pH of 7.00 and a temperature of 100.5 F. His oxygen-hemoglobin dissociation curve would |
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Definition
shift to the right, causing more oxygen to be released to his cells. |
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Term
Rhythmicity of breathing involves |
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Definition
the pre-Botzinger complex of the ventral respiratory group. |
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Term
Which of the following is NOT a type of propulsion in the digestive tract? |
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Definition
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Term
In order to remove a tumor in the muscular tunic of the stomach, a surgeon must cut through the |
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Definition
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Term
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Definition
controls movement and secretion of the digestive tract. |
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Term
Beginning at the lumen, the sequence of layers of the digestive tract wall is |
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Definition
mucosa, submucosa, muscularis, serosa |
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Term
Which of the following attaches the liver to the anterior abdominal wall? |
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Definition
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Term
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Definition
is packaged in zymogen granules. |
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Term
The gastric phase of gastric secretion |
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Definition
leads to the greatest volume of gastric secretion. |
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Term
Which of the following would stimulate gastric secretion? |
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Definition
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Term
Fatty acids and certain lipids in the duodenum initiate the release of |
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Definition
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Term
Enzymes secreted by the small intestine include |
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Definition
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Term
What is the purpose of segmental contractions of the small intestine? |
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Definition
mixing of intestinal contents |
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Term
Which of the following enzymes is found in inactive form in pancreatic juice? |
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Definition
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Term
A proteolytic enzyme secreted by the pancreas is |
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Definition
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Term
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Definition
are synthesized in intestinal epithelial cells. |
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