Organ Systems Crossword Puzzle

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QUESTIONS LIST:

function: the natural purpose of a thing.
brain: involved in the nervous system
muscles: involved in the skeletal system
lungs: involved in the respiratory system
kidney: involved in the excretory system
stomach: involved in the digestive system
heart: involved in the circulatory system
cells: building blocks of life
ovaries: involved in the reproductive system
tissue: a specialized cell that works together
organ: contain different tissues working together to carry out a set of related activities