| A | B |
|---|
| Atrium | Upper heart chambers; collecting chamber |
| Ventricle | Lower heart chamber; pumping chamber |
| Artery | Blood vessel that carries blood away from heart; thick muscular walls with smooth inner walls to allow blood to flow smoothly |
| Capillary | Tiny, thin-walled blood vessels that conects arteries to veins; site of diffusion; one cell passage at a time |
| Vein | Blood vessel that carries blood to the heart; thinner-walled than arteries; contains one-way valves to prevent backward flow of blood |
| Plasma | Fluid portion of the blood |
| Red Blood Cell | Cell that carries oxygen throughout the body; contains hemoglobin |
| Hemoglobin | Iron-containing protein found in red blood cells; attaches to oxygen molecules |
| White Blood Cell | Cell that defends the body against invading organisms; body defender; largest blood cell |
| Platelet | Cell fragment that aids in blood clotting; contains fibrin |
| Fibrin | Chemical that forms net across cut in blood vessel to trap blood cells and plasma; net former |
| Four Blood Groups | A, B, AB, O |
| Septum | Wall of tissue that separates the heart into a right and left side; prevents oxygen poor and oxygen rich blood from mixing |
| Right Ventricle | Pumps oxygen-poor blood to the lungs through the Pulmonary Artery |
| Left Ventricle | Pumps oxygen-rich blood to the body through the Aorta Artery |
| Right Atrium | Collects oxygen-poor blood from body through the Inferior/Superior Vena Cava Vein; pumps into right ventricle |
| Left Atrium | Collects oxygen-rich blood from heart from the Pulmonary Vein; pumps into left ventricle |
| Vein valves | Flaps of tissue that control the movement of blood in the veins |
| Blood | Carries oxygen and glucose to cells, carbon dioxide from cells; made up of red blood cells, white blood cells, platelets, and plasma |
| Function of the cardiovascular system (circulatory system) | Carry needed substances to cells, carry waste products away from cells, carry disease fighting cells |
| Function of Lymph Nodes | Trap bacteria that causes diseases |
| Heart Rate | Adapts to body's need of oxygen; increases if more oxygen is needed; regulated by pacemaker in right atrium |
| Pathway of blood starting at heart | Right Atrium, Right Ventricle, Pulmonary Artery, Lungs, Pulmonary Vein, Left Atrium, Left Ventricle, Aorta Artery, Body cells (through diffusion in capillaries), vena cava vein (inferior/superior), right atrium |
