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from | Encarta |  |
Giraffe |
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| Although all mammals have hearts with a similar four-chambered structure, heart rate, blood pressure, and other aspects of cardiovascular physiology vary greatly among different mammal species. Normal blood pressure in a giraffe, about 220 millimeters of mercury, would be dangerously high in a human, but is necessary to lift blood up the giraffe’s long neck to its brain. | ||||||
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| Oxford Scientific Films | ||||||
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| Appears in these articles: | ||||||
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| Heart; Giraffe | ||||||
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