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| 3 Functions of the Circulatory System | 1) brings nutients and O2 to all the cells in the body; 2) carries waste away from the cells; 3) it is a big part of our immune system |
| How blood travels through the Circulatory System | 1) O2 poor blood collects in the right atrium and moves to the right ventricle; 2) the right ventricle pumps blood to the lungs to get O2; 3) O2 rich blood collects in the left atrium and moves to the left ventricle; 4) the left ventricle moves the O2 rich blood to the body organs and cells and the process starts all over again |
| atrium | one of the heart's top two chambers which collect blood |
| ventricle | the bottom two chambers of the heart that pumps the blood |
| cells | the basic unit of your body; cells, tissue, organs, system |
| cytoplasm | jelly-like substance that fills most of the inside of the cell; it holds all the other parts together |
| nucleus | it is the brain of the cell; it controls and directs activities of the cell |
| mitochondria | release energy for all the cell's activities |
| ribosomes | makes protein for the cells |
| cell membrane | surronds the cell and helps control what enters and leaves the cell |
| endoplasmic reticulum | it stores and transports materials within the cell |
| golgi body | packages protien for export or for storage |
| red blood cells | the O2 carrying part of the blood that contains hemoglobin; moves waste from the cell |
| white blood cells | the disease fighting part of our blood; they are bigger than red blood cells |
| platelets | small pieces of blood cells that help the blood clot properly and stop you from bleeding |
| hemoglobin | substance in the red blood cells that carries oxygen from the lungs to the boddy tissues and carries carbon dioxide (CO2) from the tussues to the lungs |
| lymph fluid | a fluid that travels in the lymph vessels; transporting waste away from the cells to the blood stream |
