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11 May, 11:08

A species that has a normal resting systolic blood pressure of >260 mm hg. what is a reasonable conclusion based on this information? question 5 options:

a. the animal that makes frequent, quick motions.

b. the animal that has a very long distance between its heart and its brain.

c. the species that has very wide-diameter veins.

d. the animal with abundant lipid storage.

e. the animal that is small and compact, without the need to pump blood very far from the heart.

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  1. 11 May, 11:14
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    The answer is B. This the systolic pressure of a giraffe in comparison to that of a human that is 100 mm Hg. This high blood pressure ensures that the giraffe maintains 100 mmHg in the brain. Since a high BP impairs gas exchange and increases transpulmonary filtration, the pulmonary circulation must be separated. Therefore, in the giraffe, there is a relatively great difference between the right ventricular and left ventricular maximal rates of pressure ascent, the left ventricular rate of ascent being 5 times that calculated for the right ventricle.
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