Human Body System Research Paper

Words: 816
Pages: 4

Explain the relationship between cells, tissues, organs and organ system in the organisation of the human body. How cells, tissues, organs, and system related to each other so that the human body function as a whole.
Cells are important for everything that all living things do. When we run and play, our movements are caused by muscle cells and nerve cells working together. When we speak, get an idea or decide what to say to somebody, brain cells are working. When we digest our food, cells in our mouth, stomach, and intestines are doing their jobs. Our beating heart, breathing, eyesight, hearing, feeling and even sleeping all require cells. The cells in our bodies make up tissues, groups of the same kind of cells with a common structure and function. Examples of tissues include muscle, skin, or bone. Groups of different types of tissues are arranged together to form organs. For example, the stomach includes mucus membrane tissue, muscle, the lining of the intestine and the lining of the lungs.
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Mucous membranes are moist because of the presence of glands which secrete a thick fluid known as mucus, and they are important for a number of bodily functions. Mucous membranes line the urogenital tract, digestive tract, and respiratory tract, with one of the more well known mucous membranes being the lining of the interior of the nose. The moisture found in a mucous membrane acts to protect the body by creating a barrier and preventing the inside of the body from drying out. Mucus also traps pathogens, dirt, and particulate matter so that they can be sequestered and eliminated by the body. The nose is particularly famous for this, using mucus as a barrier between many harmful substances and the respiratory tract. Some sections of mucous membrane also have small hairs known as cilia which act as traps, and can move to push things across the surface of the