Human Body Systems
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Human Body Systems
List of Human Body related resources for students
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HowStuffWorks Videos "Assignment Discovery: Elements of Cells"

HowStuffWorks Videos "Assignment Discovery: Elements of Cells" | Human Body Systems | Scoop.it
On Discovery Channel's "Assignment Discovery," learn about the different kinds of cells and the parts that make up a cell.
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Anti-Smoking Pictures Help People Quit | ThirdAge

Anti-Smoking Pictures Help People Quit | ThirdAge | Human Body Systems | Scoop.it
Graphic anti-smoking pictures on cigarette packages may help in the quitting efforts of smokers who have been hard to reach. Read more at www.thirdage.com.
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10 Facts About Cells

10 Facts About Cells | Human Body Systems | Scoop.it
The following 10 facts about cells will provide you with well known and perhaps little known tidbits of information about cells.
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HowStuffWorks "10 Oldest Known Diseases"

HowStuffWorks "10 Oldest Known Diseases" | Human Body Systems | Scoop.it
There are some old diseases that we associate with past centuries, such as the black plague. But the plague is relatively new when compared to some of the oldest known diseases.
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Cell (biology) - Wikipedia, the free encyclopedia

The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing (except virus, which consists only from DNA/RNA covered by protein and lipids), and is often called the building block of life.[1] Organisms can be classified as unicellular (consisting of a single cell; including most bacteria) or multicellular (including plants and animals). Humans contain about 10 trillion (1013) cells. Most plant and animal cells are between 1 and 100 µm and therefore are visible only under the microscope.[2]

The cell was discovered by Robert Hooke in 1665. The cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that all cells come from preexisting cells, that vital functions of an organism occur within cells, and that all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.[3]

The word cell comes from the Latin cella, meaning "small room".[4] The descriptive term for the smallest living biological structure was coined by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in.[5]

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