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  • Essay / The left ventricle of the heart - 833

    The left ventricle of the heartThe left ventricle is one of the four hollow chambers of the heart. Being the largest chamber, it has an ovular shape and occupies most of the left lateral and anterior planes of the heart. It also occupies most of the top of the heart. The walls of the left ventricle are denser and stronger than those of the right ventricle. The thicker walls of the left ventricle carry its enormous workload of pumping blood at high pressure out of the heart. When the left atrium contracts, the mitral valve opens, releasing oxygen-rich blood stored in the left ventricle. The left ventricle fills with this blood then it contracts forcefully and the aortic valve opens. The left ventricle pushes blood through the aortic valve to the aorta where it leaves the heart and is distributed throughout the body. For this reason, the left ventricle plays a major role in the systemic circulation process. For the heart to function properly, the functions of the left ventricle must also function properly. It must relax quickly after each contraction so that oxygenated blood stored in the left atrium can refill it quickly. On the other hand, it also has to contract quickly and with great force to push this vital blood into the aorta. The force and pressure of the left ventricle must be strong enough to overcome the aortic pressure so that the blood can move forward. Left ventricular pressure must also be strong enough to stretch the aorta to accommodate sudden increases in blood volume. To meet the body's needs, the left ventricle must be able to quickly adapt its pumping capacity signaled by the nervous system. For example, the left ventricle should increase its pumping capacity reported by...... middle of paper ......rt transplantation may be the only option. /a/chambersvalves_4.htmhttp://www.skillstat.com/heartscape/chambers.htm#leftventriclehttp://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20102/bio%20102%20lectures /circulatory%20system/circulat.htmhttp://www.nhlbi.nih.gov/health/dci/Diseases/shock/shock_causes.htmlhttp://en.wikipedia.org/wiki/Left_ventriclehttp://your-doctor.com /healthinfocenter/medical-conditions/cardiovascular/conductiontutorial.htmlhttp://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_electrical.htmlhttp://www.healthcommunities.com/pacemaker/what-is-a -pacemaker.shtmlhttp://www.mayoclinic.com/health/left-ventricular-hypertrophy/DS00680http://www.medicinenet.com/script/main/art.asp?articlekey=78969http://wiki.answers.com /Q/Is_left_ventricular_hypertrophy_reversible