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What is a cell? The basic unit of structure and function in a living thing. What is tissue? A group of similar cells that perform the same function. What is an organ? A structure that is composed of different kinds of tissue. What is an organ system? A group of organs that work together to perform a major function. What is homeostatis? The process by which an organism's internal environment is kept stable in spite of changes in the external environment. What are the 5 functions? 1.shape and support 2.enables you to move 3.protects your organs 4. produces blood cells 5.and stores minerals. What are the 2 types of joints? movable and immovable What are the 4 movable joints? 1. Gliding Joint 2. Pivot Joint 3. Ball and Socket Joint 4. Hinge Joint What is an example of an immovable joint? your skull What is a movable joint? It allows the body to make a wide range of movements. What is an example of each of the 4 movable joints? Hinge Joint-elbow Ball and Socket Joint-shoulder Pivot Joint-neck Gliding Joint-ankle What is red marrow? It produces some of the body's blood cells. What is yellow marrow? It stores fat that can serve as an energy reserve. What is an immovable joint? It connects bones in a way that allows little or no movement. What is a ligament? A strong connective tissue that holds bones together in movable joints. Where would you find red marrow? In the skull Where would you find yellow marrow? In the spaces in many bones