What type of muscle tissue is found only in the heart?

Cardiac muscle is the specific type of muscle tissue found exclusively in the heart. It is distinguished from other types of muscle by its unique structure and function. Cardiac muscle cells are branched and interconnected, which helps facilitate the efficient propagation of electrical impulses throughout the heart, allowing for synchronized contractions that pump blood effectively.

Unlike skeletal muscle, which is under voluntary control and found in the limbs and other areas of the body, cardiac muscle operates involuntarily. This means that the heart beats without conscious thought, responding to signals from the autonomic nervous system. Cardiac muscle is also striated, meaning it has a banded appearance when viewed under a microscope, similar to skeletal muscle; however, it is not classified strictly as striated muscle in a general sense, since smooth muscle is also striated. The unique composition of cardiac muscle makes it a vital and specialized tissue needed for the specific function of the heart.