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| Relate: Cells & Tissues | Cells are the basic structures of living things. When similar cells come together, they make tissues. |
| Relate: Organs & Organ Systems | a group of organs that carry out a larger job (like moving blood through the body). |
| Relate: Organelles & Cells | Organelles are parts of a cell that allow the cell to function. An example is the mitochondria. |
| Define: Circulatory System | Moves blood through the body so that oxygen, food, and waste can be transported to and from every cell. |
| Define: Digestive System | Breaks down food through physical and chemical processes in order for nutrients to be delivered to all cells. |
| Define: Nervous System | Sends and receives messages to many other systems, including the muscles, the heart, and all of your senses. |
| Define: Respiratory System | Takes in oxygen to be delivered to blood in the circulatory system. Removes carbon dioxide waste from the blood to be exhaled. |
| Define: Muscular System | supports the body and allows it to move. |
| Define: Skeletal System | provides structure to the body and protects internal organs. |
| Define: Cytoplasm | jelly-like fluid within all cells; contains water, food particles, waste, and other materials |
| Define: Cell Membrane | layer that allows materials into and out of the cell (semipermeable, meaning only some things get through). |
| Define: Mitochondria | The part of the cell that releases the energy the cell needs to use through cellular respiration. |
| Define: Cellular Respiration | The process where oxygen and sugars (glucose) are used to make energy for the cell to use. Waste products are carbon dioxide and water. |
| Define: Glucose | A simple sugar that provides all the energy a cell needs to function. |
| Define: ATP | Energy packed molecule the cell uses. |
