| A | B |
|---|
| Vein | Blood vessel that carries deoxygenated blood to the heart. |
| Artery | Blood vessel that carries oxygenated blood away from the heart. |
| Capillary | Small blood vessels that connect arteries and veins. |
| Aorta | The largest artery in the body. |
| Heart | Four-chambered hollow muscular organ that pumps blood. |
| Atria | The upper chambers of the heart which receive blood. |
| Ventricles | The lower chambers that pump blood out of the heart. |
| Valve | A structure that permits the flow of blood in only one direction. |
| Septum | A thin wall of muscle separating the two sides of the heaart. |
| Pulmonary Vein | Carries oxygenated blood from the lungs to the heart. |
| Pulmonary Artery | Carries deoxygenated blood from the heart to the lungs. |
| Vena Cava | Largest vein in the body - returns blood from the body to the heart. |
| Left heart | Stronger, pumps blood to the whole body. |
| Right heart | Pumps blood to lungs. |
| Pulmonary valve | Valve separating right ventricle from pulmonary artery. |
| Aortic valve | Leads from left ventricle to the Aorta. |
| Pericardium | Protective membrane sac that anchors the heart in place. |
| Myocardium | Muscular layer of the heart. |
| Endocardium | THe inside, smooth layer of the heart. |
| Epicardium | The smooth, outer membrane of the heart. |
| Tricuspid valve | The valvethat separates the right atrium from the right ventricle. |
| Mitral valve | THe valve which separates the left atrium from the left ventricle. |
| Oxygenated | Blood (usually red) that has just come from the lungs and is full of fresh oxygen. |
| Deoxygenated | Blood that has been to the cells of the body and has lost most of its oxygen. |
| Osmosis | The diffusion of a liquid or gas through a membrane. |
| Osmosis | The process by which oxygen and carbon dioxide are exchanged between cells and capillaries. |
| Pulse | The beating of the heart felt in the veins. |
| Respiration | The process of combining oxygen and food (nutirents) in the mitochondria of the cells to produce energy nad release carbon dioxide. |
