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Submitted by lazybone64 on November 3, 2006
Category: Social Issues
Words: 496 | Pages: 2
Views: 268
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The Human Body
The Human is composed of organized cells that form systems to maintain our health. Such as the muscular system which helps in supporting movement. Also the digestive system which breaks down food. Another is the skeletal system which support the muscular system. Lastly the excretory system, that eliminates waste from the body. These system help maintain our health and body in functioning as we grow.
The muscular system, is composed of striated, smooth, and cardiac muscles within the body. First, striated muscles also known as voluntary muscle can be controlled by us, and put into action. Secondly, smooth muscles such as the bladder, digestive tract, and arteries are automatically put to function by the body. Lastly, cardiac muscles such as the heart contracts in order to pump blood throughout the body . The Heart is located beneath the breastbone and distributes blood from right to left. With muscular system movement is achieved by the cooperation of all three types muscles.
The digestive system receives and breaks down food in order to get energy in order to support our body. The process starts from the mouth, stomach, small intestine, and finally the large intestine. First, food is chewed down into small portions so it passes to the stomach. The stomach then breaks down food further with the help of gastric juice and pepsin located in the stomach. After that, food passes to the small intestine absorbs most of the nutrients into the bloodstream. Lastly, the water in the food is removed in the large intestine so it can be later on disposed.
The skeletal system is supported by three major components, the bone, cartilage, and ligament. Bones make up the body, in total there are 206 bones in the body. Next cartilage covers the bones surface in joints. Lastly ligaments are joints such as fixed, hinge, pivot, sliding, and ball-socket joints. These are incubuses by the tissue and organs...
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