Human Body Systems Lesson 1 Terms and Definitions
Organism Organism - A complete living thing. Example – members of plant and animal kingdoms. Humans, dogs, cats, plants, and more.
Body System Body System – is a group of organs that work together to perform a specific function. Example: The organs of the digestive system process food and prepare it for delivery to the body cells.
Organ Organ – is a group of different types of tissues that work together to perform a specific function. Example: Heart, Liver, Brain 2_52_19/HeartExterior01.jpg770a3d1b b b94112b39522Large.jpg
Tissue Tissue – is a group of similar cells that work together to carry out a specific function. Example: muscle tissue facilitates movement
Cell Cell – the smallest unit of an organism that can function independently. Example: epidermis skin cells (the outer most layer of skin cells).