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Heart Pump Lab

The heart is an organ responsible for pumping the blood in the body. The heart has four chambers: two upper chambers which are called atria and two lower chambers which are called ventricles. These chambers are also classified as left and right atrium and left and right ventricle, and each of them has a specific function. The heart pumps the blood by repeated contractions of its muscles.

The stimulus generated by the sinoatrial node of the heart is propagated as a wave of depolarization and stimulates both atria. The depolarization wave produces a current wave of atrial contraction. After a pulse of about 1/10 of a second, the atrial depolarization wave reaches the atrioventricular node, which is situated between the two sets of chambers. The electrical stimulus passes then from the atrioventricular node through the bundle of His to the atrioventricular bundle branches, and the Purkinje fibers, which initiate the ventricular depolarization. The ventricles then repolarize until it reaches it resting state. The depolarization and repolarization can be view through the use of an electrocardiogram.

The electrocardiography is a technique of recording the bio-electric currents generated by the heart. The graphical display of this

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Approximate Word count = 4380
Approximate Pages = 18 (250 words per page double spaced)

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