21 骨骼肌收縮時,對肌節(sarcomere)之敘述,何者正確?
(A)粗肌絲(thick filament)與細肌絲(thin filament)長度皆未縮短
(B)粗肌絲不變,細肌絲縮短
(C)粗肌絲縮短,細肌絲不變
(D)肌節並未縮短
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統計: A(19), B(15), C(19), D(0), E(0) #685041
統計: A(19), B(15), C(19), D(0), E(0) #685041