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human body week 2

tissue A group of cells that work together to carry out a particular task (job) in an organism.
organs A group of tissues that perform a complex function (job) in a body. Examples: lung, heart, liver)
organ systems A group of organs that work together to perform a certain task (job). Examples: Skeletal, Muscular, Digestive)
many celled organisms (multicellular)- An organism made up of many cells.
microscope A device used by scientists to observe (see) extremely small objects or organisms.
cell wall A stiff structure that surrounds and protects a cell. Found in plants.
organelles A tiny structure within a cell that performs a specific function (job) for that cell. They float in the cytoplasm of the cell.
skeletal system The system that is made up of all the bones in the body.
bones The organs that make up a skeleton.
bone marrow Spongy material inside long bones that produces blood cells. 
Created by: 12129922