What are the 12 organs of the body

          Organ system.

          Human body parts

        1. Human body parts
        2. List of organs in the human body
        3. Organ system
        4. Internal organs of human body and their functions
        5. Diagram of human body organs front and back

          6. Organ (biology)

          Collection of tissues with similar functions

          "Organs" and "Viscera" redirect here. For other uses, see Organs (disambiguation) and Viscera (disambiguation).

          In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function.[1] In the hierarchy of life, an organ lies between tissue and an organ system.

          Tissues are formed from same type cells to act together in a function. Tissues of different types combine to form an organ which has a specific function.

          What are the 78 organs in the human body

          The intestinal wall for example is formed by epithelial tissue and smooth muscle tissue.[2] Two or more organs working together in the execution of a specific body function form an organ system, also called a biological system or body system.

          An organ's tissues can be broadly categorized as parenchyma, the functional tissue, and stroma, the structural tissue with supportive, connective, or ancillary functions. For example, the gland's ti