All that any muscle can do is create contraction force. A muscle is a bundle of many cells called fibers. You can think of muscle fibers as long cylinders, and compared to other cells in your body, muscle fibers are quite big. They are from about 1 to 40 microns long and 10 to 100 microns in diameter.
Autonomic nervous system disorder. Also known as Autonomic Disease. Your autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart and the widening or narrowing of your blood vessels.When something goes wrong in this system, it can cause serious problems, including. 1  Blood pressure problems.2  Heart problems.our autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart and the widening or narrowing of your blood vessels. When something goes wrong in this system, it can cause serious problems, including. 1  Blood pressure problems. 2  Heart problems.
The autonomic nervous system (ANS) is a division of the peripheral nervous system that influences the function of internal organs.he activity of autonomic ganglionic neurons is modulated by âpreganglionic neuronsâ located in the central nervous system. Preganglionic sympathetic neurons are located in the spinal cord, at the thorax and upper lumbar levels.