MICROANATOMY

Detailed explanation-1: -On histology, smooth muscle typically appears as a sheet of interconnected, elongated cells within connective tissue. It is called ‘smooth’ muscle because it lacks the characteristic striations observed in histological sections of skeletal and cardiac muscle [22].

Detailed explanation-2: -Smooth muscle (involuntary). This muscle is found in one or more sheets or layers surrounding the hollow tubes of the body (i.e. digestive tube and blood vessels).

Detailed explanation-3: -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-4: -Smooth muscle, found in the walls of the hollow internal organs such as blood vessels, the gastrointestinal tract, bladder, and uterus, is under control of the autonomic nervous system. Smooth muscle cannot be controlled consciously and thus acts involuntarily.