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Cardiovascular System Faith Gallardo P.7, The blood vessels form a closed…
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The blood vessels form a closed circuit that carries blood away from the heart, to the cells and back again
Strong, elastic vessels adapted for carrying high pressure blood
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the greater the blood viscosity the greater its resistance to flow and the greater the blood pressure.
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cardiac muscle cells work like skeletal muscle cells except that cardiac muscle cells (fibers) are arranged in branching networks
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passes impulses to the Av bundle delaying the signal until atria have finished contracting located in the interatrial septum
A wave of depolarization passes from the atrial pacemaker cell over the atrium and down the Av bundle to spread through the ventricular myocardial syncytium
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Heart rate can change based on activity, level,age,medication etc..
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It consists of the heart which is a muscular pumping device and a closed system of vessels called arteries, veins and capillaries
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They do not need large amounts of elastin and smooth muscle since they transport low pressure blood back to the heart
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Primary function is to transport nutrients and oxygen rich blood to all parts of the body and to carry deoxygenated blood back to the lungs
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The ABO group consists of four possibliies A,B , AB and O.
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