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Cardiovascular
Mr. G’s Cardiovascular
| Term | Definition |
|---|---|
| atria (atrium) | upper collecting chambers of the heart |
| ventricles | lower pumping chambers of the heart |
| aorta | largest artery in the body |
| aortic valve | heart valve located on the left side of the heart between the left ventricle and aorta |
| pulmonary valve | heart valve located on the right side of the heart between the right ventricle and pulmonary artery |
| tricuspid valve | heart valve located on the right side of the heart between the right atrium and right ventricle |
| mitral valve (bicuspid) | heart valve located on the left side of the heart between the left atrium and left ventricle |
| arteries (artery) | blood vessels under pressure which carry oxygenated blood away from the heart |
| veins (vein) | blood vessels which carry oxygen poor (deoxygenated) blood toward the heart |
| capillaries | tiny microscopic blood vessels that connect arterioles and venules. Allow nutrients, gases and wastes to pass between the cells |
| septum | wall that separates the right side of the heart from the left side |
| endocardium | inner most lining of the heart |
| myocardium | the muscular middle section of the heart |
| pericardium | membrane that surrounds the heart |
| conductive pathway | Electrical impulses originating in the heart causing the cyclic contraction of the heart muscle. |
| sinoatrial node (SA node) | The primary pacemaker of the heart. Initiates the contraction of the heart muscle. |
| atrioventricular node (AV node) | Group of nerve fibers located between the atria and ventricles. The heart's secondary pacemaker. |
| bundle of His | Nerve fibers in the septum of the heart |
| purkinje fibers | A network of nerve fibers throughout the ventricles |
| pulmonary circulation | The cardiovascular system which carries deoxygenated blood away from the heart, to the lungs, and returns oxygenated (oxygen-rich) blood back to the heart |
| systemic circulation | The circulation of the blood to all parts of the body except the lungs |
| Plasma | The liquid portion of blood. 90% water. |
| Blood Cells | The formed elements of blood including, red blood cells, white blood cells and platelets. |
| Erythrocytes (Red blood cells) | Formed elements of blood that contain hemoglobin which carries oxygen and carbon dioxide throughout the body. |
| Leukocytes (White blood cells) | Formed elements of blood which fight infection and produce immunity |
| Thrombocytes (platelets) | Formed elements of blood which assist in clotting the blood. |
Created by:
smnewman
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