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Cardiovascular

Mr. G’s Cardiovascular

TermDefinition
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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