18. The Heart
Electrical Conduction System of the Heart
Multiple Choice
Multiple ChoiceWhich of the following is a difference between cardiac muscle and skeletal muscle?
A
Unlike skeletal muscle, cardiac muscle is not striated.
B
Unlike skeletal muscle cells, cardiac muscle cells do not rely on calcium ions for contraction.
C
Unlike skeletal muscle, cardiac muscle does not use a sliding filament mechanism for contraction.
D
Unlike skeletal muscle cells, cardiac muscle cells can be autorhythmic.
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