Adenosine triphosphate (ATP) is considered by biologists to be the energy currency of life. It is the high-energy molecule that stores the energy we need to do just about everything we do.
The basic function of muscle is to generate force. Secondarily, muscles can provide some shape and form to the organism. Anatomically and functionally, muscle can be divided into two types, smooth and striated. Striated or striped muscle can be further divided into skeletal muscle and cardiac (heart) muscle.
Quick Answer. The two main functions of a muscle cell are to produce movement through force and to maintain posture, according to Science360. They are frequently called muscle fibers because the length of a muscle cell is greater than the width. Continue Reading.