Chapter 26 Quiz

Quiz Content

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. Dives by Weddell seals are mostly

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. The deepest dives of Weddell seals are at a depth of about _______ m.

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. Which animal is the deepest diver?

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. An animal's maximum possible blood store of O2 is calculated by

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. One the most consistent features of diving species of mammals is that, relative to terrestrial species, they have

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. In diving mammals, the thorax

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. Which oxygen store (per kg) is significantly larger in true (phocid) seals, such as the Weddell seal, compared to a human?

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. Which oxygen storage compartment tends to be the largest in diving mammals?

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. The predicted dive time of a Weddell seal based on calculations of its oxygen stores is likely to be _______ the actual maximal dive times measured in the field.

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. Which statement regarding circulation and diving is false?

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. Because of a regional vasoconstriction during a prolonged dive, the heart responds with a reduction in

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. In freely diving marine mammals, heart rate

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. Fish removed from water are likely to exhibit

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. During forced submergence, harbor seals deplete O2 in their _______, while O2 levels in their _______ remain high.

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. Following a 45-minute dive by a Weddell seal, circulating levels of lactic acid would likely fall to pre-dive levels after about

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. Metabolic limits on dive duration are determined by all of the following except

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. During a voluntary dive, a Weddell seal's metabolic rate is _______ that of a resting seal on land.

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. During a dive, blood pH tends to _______ due to an increase in _______.

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. The longest dive that can be undertaken without a net accumulation of lactic acid above resting level is called the

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. What is the primary cause of decompression sickness?

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