Most sources state that there are over named skeletal muscles in the human body, although some figures go up to as many as The dissension comes from those that count the muscles within a complex muscle. For example the biceps brachii is a complex muscle that has two heads and two different origins. 5 Apr You may have been neglecting a very important muscle in your body, the one that has a huge impact on whether you're going to stick to your diet or make it to the gym tonight. The one that says no to ice-cream but yes to a bowl of Greek yogurt. And although not a true muscle, willpower has many of the. Composite or hybrid muscles have more than one set of fibers that perform the same function, and are usually supplied by different nerves for different set of fibers. For example, the tongue itself is a composite muscle made up of various components like longitudinal, transverse, horizontal.