organ systems - Organ Systems The human body contains a...

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Organ Systems The human body contains a very complex set of organ systems such as the integumentary, skeletal, muscular, nervous, senses and endocrine systems. "An organ is a structure made up of two or more kinds of tissues organized in such a way that the tissues can together perform a more complex function than can any tissue alone. A system is a group of organs arranged in such a way that they can together perform a more complex function than can any organ alone.” (Patton, 2008) So, basically, these organ systems work by themselves and together to keep the body working the way it is supposed. Each of these organ systems serves its own purpose, but when put together it becomes a well oiled machine with the ability to take on most anything thrown at it. The integumentary system consists of the skin, hair, nails, sense receptors, sweat glands, and oil glands. The skin is the most important and largest organ in this system. It can weigh 20 pounds are more in most adults. It protects us from things like bacteria and mechanical injury and also regulates body temperature. It synthesizes chemicals and functions as a sophisticated sense organ. This system protects the body from the outside world and is extremely important to survival (Patton, 2008). The skeletal system gives the body shape and form as well lending us support, protection, and movement. It also produces blood and stores essential minerals. It is made up of both bones and joints. It has two hundred six bones to which softer tissues and organs of the body are attached (MSU, n.d.). The skeleton protects vital organs and not only contains bones but also cartilage and ligaments. The joints in the skeleton make movement possible and without joints the body would be rigid and immobile. Bones also store important minerals such as calcium and
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phosphorus. Another very important function of the skeletal system is the formation of blood cells in the red marrow of certain bones (Patton, 2008). The muscular system has over six hundred skeletal muscles that function for body movement. These striated muscles contract and relax voluntarily. These muscles are attached to the skeletal system and are consciously controlled. Muscles account for around forty percent of body weight. Metabolism occurs to produce heat in the muscles to help maintain body temperature (MSI, 2001). Aside from voluntary muscles, there are also involuntary and cardiac muscles. Involuntary muscles are found in blood vessel walls, and in the lining of hollow organs such as the stomach and small intestine. Cardiac muscle is the specialized type of involuntary muscle tissue of the heart. It pumps blood into the vessels of the circulatory system when it contracts (Patton, 2008). The nervous system is made up of groups of cells called neurons and is an internal
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organ systems - Organ Systems The human body contains a...

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