How are cardiac and smooth muscles similar?

Question

Quizplus · Accepted Answer

Both cardiac and smooth muscles are involuntary, meaning that they are not under conscious control. This is in contrast to skeletal muscles, which are voluntary and can be consciously controlled by the person. Option A is incorrect because smooth muscles have both thin and thick protein filaments, while cardiac muscles have both thin and thick filaments as well as specialized junctions called intercalated discs. Option B is incorrect because both cardiac and smooth muscles are not typically under conscious control. Option D is incorrect because neither cardiac nor smooth muscles are connected to bones. Finally, option E is incorrect because cAMP is not an energy source, but rather a molecule involved in cellular signaling.

How Are Cardiac and Smooth Muscles Similar