A skeletal muscle is considered an organ of the muscular system. Each muscle consists of skeletal muscle tissue, connective tissue, nerve tissue and blood, or vascular, tissue. A striated muscle consisting of fibers, skeletal muscles vary in size, shape and arrangement of those fibers. Each skeletal muscle fiber is a single cylindrical muscle cell. They are soft and fragile, just like other body cells.
However, together, these cells combine to form the muscles that move and support the human skeleton. They also make up fifty percent of the body’s weight. Usually attached to tendons, skeletal muscles, link two bones across that bones connecting joint. In total, there are 640 individually named skeletal muscles in the body. When the muscles contract (shorten), the bone moves. They usually contract voluntarily by conscious bodily movements. However, they can contract involuntarily through the reflexes.
The muscles nearest to the skin are called superficial muscles while muscles that closest to the inside of the body are deep muscles. A muscle’s name usually describes its name, location or job.
A few examples include:
- Bicep (bends upper arm)
- Tricep (bends lower arm)
- Rectus Abdominus (Stomach)
- Deltoid (Triangular area that moves shoulder and upper arm)
- Frontalis (forehead)
In order for the skeletal muscles to work properly, they need oxygen and food for energy. Food is extracted from what we eat via the digestive system and via the blood stream. If the muscles work too hard but don’t get enough fuel back in return, they become overworked and that can cause, strains which leads to pain and injuries which may require the usage of muscle relaxants.
If you take good care of your muscles with exercise, a proper diet that is low in processed food and sugar while being high in lean protein, good fats, vegetables, fruits and complex carbohydrates, then your muscles will be good to you.