GENERAL HISTOLOGY

Detailed explanation-1: -Cardiac muscle cells are located in the walls of the heart, appear striped (striated), and are under involuntary control. Smooth muscle fibers are located in walls of hollow visceral organs (such as the liver, pancreas, and intestines), except the heart, appear spindle-shaped, and are also under involuntary control.

Detailed explanation-2: -Exocrine glands, smooth muscles, and cardiac muscles are controlled by the autonomic nervous system (ANS). The ANS is a division of the peripheral nervous system that is involved in controlling many of the involuntary or unconscious processes in our bodies such as heart rate and digestion.

Detailed explanation-3: -At a cellular level, smooth muscle can be described as an involuntary, non-striated muscle. Smooth muscle consists of thick and thin filaments that are not arranged into sarcomeres giving it a non-striated pattern.