The heart muscle is which type of muscle tissue?

• A. Cardiac muscle
• B. Smooth muscle
• C. Skeletal muscle
• D. Striated muscle

Answer: (A)

The heart muscle is cardiac muscle. This tissue is specialized for the heart’s nonstop, rhythmic pumping. Cardiac muscle cells are striated like skeletal muscle, but they’re not under conscious control; they’re involuntary and work as a coordinated unit thanks to intercalated discs that connect the cells and allow rapid electrical signaling. This setup enables the heart to contract smoothly and consistently in a heartbeat.

Smooth muscle, by contrast, is non-striated and found in the walls of hollow organs and vessels, working involuntarily to move fluids and contents along. Skeletal muscle is voluntary and attached to bones, providing deliberate movement, and while it is also striated, its control and function are different from the heart’s. So, the heart’s muscle is best described as cardiac muscle.