Deep-sea divers need to go up to the surface slowly (after quite some time using compressed air for breathing under the high-pressure deep-sea environment). Re-surfacing quickly can be very painful (and even be fatal) for the diver. This phenomenon can be explained by _____________. Select one: a.freezing point depression b.Henry's Law c.osmotic pressure d.greater solubility of salt in deep sea

Deep-sea divers need to go up to the surface slowly (after quite some time using compressed air for breathing under the high-pressure deep-sea environment). Re-surfacing quickly can be very painful (and even be fatal) for the diver. This phenomenon can be explained by _____________. Select one: a.freezing point depression b.Henry's Law c.osmotic pressure d.greater solubility of salt in deep sea

Basic Clinical Lab Competencies for Respiratory Care: An Integrated Approach

5th Edition

ISBN:9781285244662

Author:White

Publisher:White

Chapter9: Hemodynamic Monitoring

Section: Chapter Questions

Problem 1SEPT

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Divers who go to great depths in the ocean experience large differences in pressure between the surface and their final destinations below the surface. At times, they have to avoid quick changes in pressure because of the effects on the solubility of nitrogen in their blood. If the solubility decreases quickly, then gas bubbles can form in the person’s blood, causing a dangerous condition called “the bends.” In one or two sentences, state whether you would expect the condition to be a greater hazard for divers as they dive down or as they return to the surface. Then, explain your prediction in terms of the solubility of gases in liquids at different pressures.
A patient had been vomiting for the last 3 days and has an abnormally low respiratory rate. A. Why do you think they have a low respiratory rate? B. What do you think has happened to the ECF volume and osmolarity over the last 3 days? C. Will this lead to any changes in the volume of water in their cells?
Countercurrent flow of water and blood increases the efficiency of gas exchange in ______. a. fishes c. birds b. amphibians d. all of the above
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Warm, still water holds______ oxygen than cold, fast-flowing water. a. more b. less
Which statement is true? A) When a diver descends, the amount of oxygen gas dissolved in the diver's blood will decrease. B) When a diver ascends too rapidly to the surface of water, gas comes out of the diver's blood, because the solubility of gas decreases. C) When a can of soda is opened, the gas pressure above the beverage is increased. D) When a can of soda is opened, the amount of carbon dioxide gas dissolved in the beverage increases.
1) A diver decides to take a balloon with him on a scuba diving excursion to a depth of 10m. The size (volume) of the balloon would _____. A) remain the same throughout the dive B) decrease on the way down and return to its original size on the way back up C) increase on the way down and shrink back to its original size on the way back up 2) How does the size of the air bladder compare between freshwater and salt water fish? A) freshwater fish have larger air bladders because they need to be less dense B) freshwater fish have smaller air bladders because they need to be less dense C) saltwater fish have larger air bladders because they need to be less dense D) freshwater and salt water fish have the same size air bladders because the air bladders play no role in osmoregulation or maintaining salt balance 2) Physoclistous fish fill their air bladders by _____. A) going to the surface and gulping air B) using the carbon dioxide that they produce through aerobic metabolism C)…
When a person hyperventilates, what happens to his or her blood pH? A person who is hyperventilating is often told to breathe into a paper bag. Why might this help to correct the pH imbalance?
A shark’s blood is isotonic to the surrounding seawater because of the reabsorption of ____ in its blood. a. ammonia b. uric acid c. urea d. NaCl
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