Age Related Changes That Occur in the Cardiovascular System

950 WordsApr 20, 20134 Pages
Age Related Changes that Occur in the Cardiovascular System Age Related Changes that Occur in the Cardiovascular System In the normal conduction of the heart the electrical impulse starts in the SA node, also called the pacemaker of the heart. The electrical impulse travels through the right atrium and through the Bachmann’s bundle into the left atrium. This stimulates the atria to contract. Next the signal travel to the AV node. The AV node slightly delays the signal. This delay is needed for the heart to beat properly. Without this delay the atria and ventricles would beat at the same time. The electrical signal then travels to the Bundle of His where it is split into the signals going to the right and left ventricle. The signal…show more content…
It is a disruption of the normal electrical signal. Bradycardia is caused by changes to the heart related to aging. It is also a disruption of the normal electrical signal. Congestive heart failure (CHF) is a condition caused by the weakening of the heart and the cardiovascular system. It develops when the heart is not able to pump enough blood. Some causes of CHF would include, narrowed arteries that supply blood to the heart muscle – coronary artery disease, past heart attack, or myocardial infarction, with scar tissue that interferes with the heart muscle’s normal work, high blood pressure, heart valve disease, primary disease of the heart muscle itself, called cardiomyopathy. High blood pressure is the leading cause of CHF in the elderly. High blood bressure put high demands on the heart to pump blood. This prolonged demand weakens the heart muscle over time.The heart doesn't pump as efficiently as it should, the blood slows down and less blood is pumped. The blood returning to the heart backs up in the veins forcing fluid from the blood vessels into tissues of the feet and legs. The swelling that results is call "edema". Bibliography Medline Plus, Aging changes in the heart and blood vessels, Retrieved April 1, 2013 From http://www.nlm.nih.gov/medlineplus/ency/article/004006.htm Jenkins, Kemnitz, Tortora (2010) Anatomy and Physiology From Science to Life Danvers, MA: John
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