There are around 78 organs in the human body depending on what you consider an organ. The largest organ of the human body is your epidermis also known as your skin. An organ is a group of different types of tissue that work together to perform a single function. The eye is an organ made up of epithelial tissue, nervous tissue, muscle tissue, and connective tissue. As different as these tissues are, they all work together for a single function, sight.

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On the following pages we will discuss organ systems. There you will fine detailed descriptions of the organs and their functions in our bodies. Here are some fun and informative sites to help you learn about our bodies organs and how they work. - Organs of the Human Body - Here is an excellent model of the human body with labeled organs.