Compare and Contrast Smooth, Skeletal, and Cardiac Muscle

Multiple Choice

Compare and contrast smooth, skeletal, and cardiac muscle. Which of the following is NOT an accurate statement?

A) action potentials can lead to contraction in smooth muscle and skeletal muscle
B) voltage-gated sodium channels are primarily responsible for the initial depolarization in both smooth muscle and cardiac myocytes.
C) contraction in smooth, skeletal, and cardiac muscle is mediated by actin and myosin sliding relative to one another.
D) smooth muscle contracts 100s of times more slowly than skeletal muscle.