While most people take vitamin E by mouth, you can use it as a suppository rectally and vaginally to help with minor irritation or dryness. No matter how you use vitamin E, it has the potential to cause side effects.
Muscle fibers are in turn composed of myofibrils. The myofibrils are composed of actin and myosin filaments, repeated in units called sarcomeres, the basic functional units of the muscle fiber.The sarcomere is responsible for the striated appearance of skeletal muscle, and forms the basic machinery necessary for muscle contraction.keletal muscle is made up of individual muscle cells or myocytes, known as muscle fibers. They are formed from the fusion of developmental myoblasts (a type of embryonic progenitor cell that gives rise to a muscle cell) in a process known as myogenesis.
The main neurotransmitter involved in skeletal muscle contraction is _____.