What Makes Oxygenated Blood Affects The Heart

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In animals the heart is a muscle organ responsible for pumping blood throughout the body via the circulatory system. Blood is responsible for the transporting of oxygen and nutrients and the elimination of waste products. Blood is pumped by the heart with a rhythm made by the pacemaker cells of the sinoatrial node. These rhythms create a current that contracts the heart moving over the atrioventricular node and the conducting system of the heart. Deoxygenated blood enters the heart from the systemic circulation which gets in the right atrium coming from inferior and superior venae cavae and progresses to the right ventricle. Furthermore it is pumped in the pulmonary circulation, to the lungs where there is an exchange of oxygen for carbon dioxide. Oxygenated blood travels to the left atrium goes pass the left ventricle and eventually pumped out in the aorta all the way to the systemic circulation where metabolism occurs and oxygen is converted to carbon dioxide. The average heat beats for a normal person is 72 beats per minute at resting rate. (Cryer, 1980) …show more content…
For every heartbeat an electrical wave migrates through the heart. This impulse causes the muscle to contract and eject blood from the heart. (Morad & Tung , 1982) A normal reading of a heartbeat on ECG will shows the timing of a full wave with peaks on either ends on the graph. The first wave called “P wave” is made by the left and right atrium, making a straight line when the impulse goes to the first bottom curve. The left and right ventricles induce what is known as the QRS complex. The third and final wave is called the T wave produce a return to the resting membrane potential. (Cryer,

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