radiographic (Xray) study by Bron (1966), regional vasoconstriction during a E.
ID: 272705 • Letter: R
Question
radiographic (Xray) study by Bron (1966), regional vasoconstriction during a E. skeletal muscle. seal's forced A. lungs B. brain. dive was indicated by a measured lack of blood flow to the C. heart. D. kidneys graded manner O. Which of the following statements is0 supported by the data in the figure? A. In freely diving seals, the degree of bradycardia is proportional to dive duration. In forcibly submerged seals, the degree of bradycardia is proportional to dive duration. 50 B. C. In freely diving humans, the D. In forcibly submerged seals, the10 E. In freely diving seals, diving heart degree of bradycardia is proportional to dive duration. 20 proportional to dive duration 10 15 Dive duration (min) 20 25 30 rate varies with dive duration in a According to a central hypothesis of diving physiology, it is adaptive for diving mammals to keep their dives shorter than their species-specific acrobic dive limit (ADL) because doing so A. maximizes time spent underwater B. minimizes recovery time at the surface C. D. E. All of the above ? maximizes the time available for foraging. minimizes exposure to predation. C) . Which of the following behaviors do Weddell seals not employ in order to reduce metabolic costs during a dive? Mark all that apply. A. Gliding B. Continuous stroking C. Alternating stroking and gliding D. all of the above are utilized to conserve energy. E. None of the above utilized to conserve energy dJs. When comparing humans to Weddell seals it can be stated that (Mark all that apply) A. Weddell seals have three times the oxygen storing capacity as humans B. Weddell seals raise their metabolic rate about halfas much as humans during exercise. C. both increase heart rate and stroke volume when exercising D. Only Weddell seals redistribute blood flow during exercise. E. both have diving bradycardia.Explanation / Answer
Hi Answer:
32. During a landmark radiographic (Xray) study by Bron (1966), regional vasocontraction during seals forced dive was indicated by measured lack of the blood flow to the
Answer: Option D. Kidneys
a.Which of the following statement is supported by the data in the figure?
Answer: Option E. In freely diving seals, diving heart rate varies with dive duration in a grader manner.
b. According to a central hypothesis of diving physiology, it is adaptive for diving mammals to keep their dives shorter than their species-specific aerobic dive limit (ADL) because doing so
Answer: Option E. All the above
c. Which of the following behaviors do Weddell seals not employ in order to reduce metabolic costs during a dive? Mark all that apply.
Answer: Option B. Continuous stroking
Explanation: Weddell seal during dive try to keep the metabolic cost low by gliding or alternating stroking and gliding. Seals never undergo continuous stroking because continuous stroking costs more energy and due to loss of more energy seals metabolic cost increase.
d.When comparing humans to Weddell seals it can be stated that
Answer: option D. Only Weddell seals redistribute blood flow during exercise
Explanation: Weddle seals have about three times the oxygen-storing capacity as humans. They can raise their metabolic rate about half as much as a human during exercise and both human and seals have diving bradycardia. One feature which is not in human is that Weddle seals can redistribute blood flow during exercise.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.