The mechanism of contraction in smooth muscle is different from skeletal muscle in that ________.
A. ATP energizes the sliding process
B. the site of calcium regulation differs
C. the trigger for contraction is a rise in intracellular calcium
D. actin and myosin interact by the sliding filament mechanism
Answer:B
The mechanism of contraction in smooth muscle is different from skeletal muscle in that ________.
A. ATP energizes the sliding process B. the site of calcium regulation differs C. the trigger for contraction is a rise in intracellular calcium D. actin and myosin interact by the sliding filament mechanism