問題詳情
41. Diving mammals like whales and seals experience frequent periods when they are not able to breathe air. Which of thefollowing is a muscle adaptation they show to this challenge?
(A)increased capillary densities
(B)increased myoglobin concentrations
(C) increased amounts of sarcoplasmic reticulum
(D)increased expression of acetylcholine receptors
(A)increased capillary densities
(B)increased myoglobin concentrations
(C) increased amounts of sarcoplasmic reticulum
(D)increased expression of acetylcholine receptors
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