Kyla is studying seal diving and noticed that the heart rate of a seal dips to a

DHanzel

wrote...

13 years ago

Kyla is studying seal diving and noticed that the heart rate of a seal dips to a few beats per minute during a dive. Why?
   A. Aerobic cellular respiration ceases during a dive.
   B. An active heart is required only during air breathing.
   C. A large share of the blood oxygen supply is diverted to limb muscles.
   D. A heart is required underwater only for gills as there is no air to breathe.
   E. Muscles contain considerable myoglobin and don’t need oxygen.

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