阿摩線上測驗
6. Which of the following describes a similarity between cardiac and smooth muscle cells?
(A) Ca2+ release and contraction strengths are graded.
(B) Action potentials are generated by slow waves.
(C) An action potential always precedes contraction.
(D) An extensive system of T-tubules is present.
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統計： A(1), B(0), C(0), D(0), E(0) #3475809
統計： A(1), B(0), C(0), D(0), E(0) #3475809
