The Muscular System of the Human Body

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The muscular system is a very important part of the human body. It has many components and functions, and is the source of the body’s movement. There are roughly 650 muscles in the human body and are different types of muscles. Muscles can either be voluntary or involuntary which means controlled or uncontrolled movement. Muscles have many reasons and in this paper you will widen your knowledge of muscles and their functions as well their diseases and how they help maintain the body. There are three different types of muscles in the body, and the first to be talked about are skeletal muscles. The body consists of about 640 skeletal muscles and they just so happen to be the only voluntary or (controlled) muscles. Their main function is to contract and expand so that your bones are able to move. Most skeletal muscles are attached to bones or joints so that the muscle can either expand or contract to create motion. They consist of band like fibers attached and bundled together that run along the bone. These fibers are held together by connective tissue called epimysium, which also protects the muscle. Skeletal muscle is what makes the body able to walk and move, without these skeletal muscles the body could not function properly because it would have nothing to rely on for stabilization and strength. They contain what is called striated cells, which is cells that are shaped like bands and are individual, they stretch out the length of the muscle so that they are able to contract with it and these cells are also what give the muscle energy through respiration of proteins fats and glucose which is the energy supplement for all muscles. For example refer to figure 1-1 1-4 and1-5 for the cell Another type of muscle is the smooth or (vi... ... middle of paper ... ...ferent muscles the largest happens to be a skeletal muscle called gluteus maximus and the hardest working muscle is in the eye. Muscles are very vital to the human body and as seen above mankind could not survive without this system. It helps for energy, movement, temperature stabilization, pumps blood, and keeps everything working properly as well as many more things. Muscles don’t just do it all by themselves though, muscles work with every other system in the body especially the nervous system because that is were in gets all of its impulse signals from the brain so that the muscle are able to do the things they are capable of. Works Cited www.livescience.com cross-reference with www.humambodyfacts.com, www.wiseGeek.org Alcamo, Edward, and Krumhardt, Barbara. Anatomy and Physiology The Easy Way. Hauppauge, New York.: Barron’s Educational series, inc. 1996

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