Parts of Nervous System. Nervous System: Nervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whether voluntary or involuntary, and adjusts the individual (organism) to the given surroundings.
Compared to skeletal muscle, smooth-muscle cells are small. They are spindle-shaped, about 50 to 200 microns long and only 2 to 10 microns in diameter. They have no striations or sarcomeres. Instead, they have bundles of thin and thick filaments (as opposed to well-developed bands) that correspond to myofibrils.
Confidence votes 17. Smooth muscle is a type of muscle. Smooth muscle makes up most of the muscle in the organs such as the heart. Unlike skeletal muscle smooth muscles are not under direct voluntary control.Example we can't make are heart beat on by our self. We need a muscle the keeps the heart beating.onfidence votes 17. Smooth muscle is a type of muscle. Smooth muscle makes up most of the muscle in the organs such as the heart. Unlike skeletal muscle smooth muscles are not under direct voluntary control. Example we can't make are heart beat on by our self. We need a muscle the keeps the heart beating.