Preview

Myocardial Infarction: Heart Attacks

Better Essays
Open Document
Open Document
1368 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Myocardial Infarction: Heart Attacks
Riya Ragbarsingh

General Biology

Dr. Samira Ziaei-Halaby

May 8, 2012

Myocardial Infarction

Myocardial Infarction also known as “heart attack”, is when a damaged muscle or artery is blocked preventing the blood to flow through. Because of fast food places such as McDonalds, Burger King, Wendy’s and etc… Most Americans prefer eating outside than having a healthy home cooked meal. Many people do not realize the amount of fatty and oily substances that are in the meals that are being cooked. Heart attack is a leading killer in most men and women in the United States .

The heart is made up of four chambers, two atriums and two ventricles. The right side of the heart pumps blood into the lungs and left side pumps blood into the organs and tissues of the body. The right ventricles carry deoxygenated blood to the lungs and the oxygenated blood is carried by the pulmonary veins to the whole body. Blood flows through the coronary arteries also but if one of the arteries gets clogged, blood will not be able to pass through smoothly causing it to build up and damaging the heart muscle. This leads to a very serious heart condition known as Myocardial Infarction or in other words “heart attack”. …show more content…
According to the National Heart Lung and Blood Institute, “Heart attacks occur most often as a result of a condition called coronary artery disease” (CAD). During a heart attack, if the coronary artery isn’t treated right away, the heart muscle begins to die and then gets replaced by scar tissue. Due to this, the heart damage may not be obvious and will cause severe or long-lasting
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Powerful Essays

    Chapter 18 Notes
    • 1227 Words
    • 5 Pages

    Chapter 18 Notes

    Chapter 18: The Cardiovascular System: The Heart Heart Anatomy Approximately the size of a fist Location Enclosed in pericardium, a double-walled sac Pericardium Superficial fibrous pericardium Deep two-layered serous pericardium Layers of the Heart Wall Epicardium—visceral layer of the serous pericardium Myocardium Endocardium is continuous with endothelial lining of blood vessels Chambers Four chambers: two atria and two ventricles Atria: The Receiving Chambers Walls are ridged by pectinate muscles Vessels entering right atrium o Superior vena cava o Inferior vena cava o Coronary sinus Vessels entering left atrium o Right and left pulmonary veins Ventricles: The Discharging Chambers Walls are ridged by trabeculae carneae Papillary muscles project into the ventricular cavities Vessel leaving the right ventricle o Pulmonary trunk Vessel leaving the left ventricle o Aorta Pathway of Blood Through the Heart The heart is two side-by-side pumps o Right side is the pump for the pulmonary circuit  Vessels that carry blood to and from the lungs o Left side is the pump for the systemic circuit  Vessels that carry the blood to and from all body tissues Pathway of Blood Through the Heart Right atrium  tricuspid valve  right ventricle Right ventricle  pulmonary semilunar valve  pulmonary trunk  pulmonary arteries  lungs…

    • 1227 Words
    • 5 Pages
    Powerful Essays
    Read More
  • Satisfactory Essays

    Sc235 Unit 4 Assignment
    • 440 Words
    • 2 Pages

    Sc235 Unit 4 Assignment

    The heart is what some determine to be the most important organ in our bodies and one of the biggest contributors. It is one of the major organs that if we did not have, it would not be possible for us to live. The heart is about the size of a fist and is broken down into four chambers, the aorta, superior vena cava, pulmonary artery, and the coronary artery. The four chambers include the right and left atrium and the right and left ventricle. The heart is responsible for supplying oxygen and blood to the entire body. Blood passes through these four chambers and then exits and pumps into the rest of the body. The heart also has three layers of walls…

    • 440 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Hs130 Unit Ii Seminar Option Ii
    • 514 Words
    • 3 Pages

    Hs130 Unit Ii Seminar Option Ii

    The blood flows through our heart in a series of different steps and factors. Oxygen flows into the heart through the right atrium where at this time the tricuspid valve is closed, allowing the blood to fill the right atrium. Next, the muscle walls of the right atrium contract and push the blood through the tricuspid valve into the right ventricle. Once this occurs the right ventricle contracts and pushes the blood through the pulmonic valve into the pulmonary artery. The oxygen rich blood is then returned from the lungs to the left sides of the heart and into the left atrium. The contract of the muscle of the left atrium pushes the blood out into the left ventricle. Finally once the left ventricle fills with blood the muscle walls contract pushing blood into the aorta and throughout the body (Thibodeau, 2008).…

    • 514 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Xacc/280 Week 4 Business Plan
    • 481 Words
    • 2 Pages

    Xacc/280 Week 4 Business Plan

    Given the information presented in the lecture and chapter 13, label a diagram of the heart.…

    • 481 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    p4 explain the physiology of two named body systems in relation to metabolism

    • 1354 Words
    • 4 Pages

    p4 explain the physiology of two named body systems in relation to metabolism

    The myocardium, commonly referred to as the heart, acts as a pump for transporting blood around the body via a collective system, known as the cardiovascular system. This system has various components; blood vessels; mainly arteries, veins and capillaries. The cardiovascular system has four main functions within the body. Firstly to transport dissolved oxygen, hormones, nutrients, salts, enzymes and urea to cells located around various places within the body, whilst at the same time eliminating any waste products such as carbon dioxide and water. Secondly, to protect the body from infection and blood loss. Thirdly, to distribute heat around the body to enable a healthy temperature of 37oc and finally to aid the body to maintain fluid balance. This ‘human pump’ can be regarded as two pumps. The fist sized organ contains two muscular chambers; the upper chamber; the atrium and the lower; the ventricle. The right side of the heart pumps deoxygenated blood from the veins to the lungs for oxygenation, whilst the left side pumps oxygenated blood from the lungs to the body. It is important to note that the two sides are separated by a septum. The blood flows through the heart twice within one cycle, this is known as ‘double circulation’.…

    • 1354 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Cor Pulmonale Research Paper
    • 470 Words
    • 2 Pages

    Cor Pulmonale Research Paper

    Blood enters the heart through the Superior Vena Cava which is the large vein at the top of the heart, and the Inferior Vena Cava, which is the large vein at the bottom of the heart. Blood flows into the right atrium, passes through the tricuspid valve, and makes its way into the right ventricle. It then moves through the pulmonic valve, into the pulmonary artery to the lungs.” After picking up oxygen in the lungs, the blood moves out of the lungs into the pulmonary vein, into the left atrium, through the mitral valve, and into the left ventricle that pushes blood to the body through the aortic valve. Once blood leaves the heart it is in the aorta where it flows to various parts of the body” (Whitlock, J. 2017).…

    • 470 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Bio1000 Unit 1 Assignment 1 Heart And Lungs
    • 685 Words
    • 3 Pages

    Bio1000 Unit 1 Assignment 1 Heart And Lungs

    The function of the heart is to pump blood throughout the body. The heart pumps blood containing oxygen from the lungs to body. It passes blood without oxygen back to the lungs for more oxygen. The heart has four chambers; the two upper chambers are called atriums, and the two lower chambers are called ventricles. The left atrium is located above the left ventricle, and they are separate by a valve called the mitral valve. The…

    • 685 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Homeostasis Research Paper
    • 800 Words
    • 4 Pages

    Homeostasis Research Paper

    The heart lies in the thoratic cavity, organs associated with the heart are inferiorly, the hearts apex rested on the tendon of the diaphragm, superiorly, the great blood vessels, posteriorly the oesophagus, trachea and the left and right bronchus, laterally, the lungs and anteriorly the sternum and ribs. (Waugh& Grant 2014). The heart provides a constant blood circulation action and the blood vessels provide a network for the blood flow. The heart is the pump responsible for maintaining adequate circulation of oxygenated blood around the vascular network of the body, ( www.le.ac.uk) the right side of the heart pumps blood to the lungs (pulmonary circulation) and the left side receives oxygenated blood and supplies it to the rest of the body (systemic circulation). There are three types of blood vessel, arteries, capilleries and veins. Blood is pumped from the heart through the arteries at high pressure which could damage the tissue so it needs to go through the capillaires which are smaller low pressure blood vessels that are responsilbe for providing oxygen to the tissues, they also absord excess carbon dioxide and then deliver the blood into the veins which then supply the blood back to the heart. The heart generates its own electrical impulses, it does not rely on any other external mechanisn to make it beat. A normal heart rate is 60-80 times per minute, factors which can decrease or…

    • 800 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Impact of Myocardial Infarction
    • 314 Words
    • 2 Pages

    Impact of Myocardial Infarction

    The Cellular lever is essential to the homeostasis of an entire organism. In this case study you will learn the impact that a Myocardial Infarction (Heart Attack) has on heart cells. The Patient (Joseph) is a 38 year old male who started back smoking after quitting for 3 years. He has been busy working long hours and the stress of his job was wearing on his body.…

    • 314 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Circulatory Diseases
    • 300 Words
    • 2 Pages

    Circulatory Diseases

    • Coronary Heart Disease: The result of narrowing of the arteries of the heart, called the coronary arteries. This can result in the death of a portion…

    • 300 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Coronary Heart Disease Research Paper
    • 465 Words
    • 2 Pages

    Coronary Heart Disease Research Paper

    Coronary heart disease or CHD is a narrowing of the small blood vassals that supply the heart with blood and oxygen. The disease develops when a combination of fatty material, calcium, and scar tissue or plaque, builds up in the arteries that supply the heart with blood. This slows the blood flow and causes chest pain. Men in their 40s have a higher risk of CHD than women. But, as women get older, their risk increases so that it is almost equal to a man's risk.…

    • 465 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Sudden Illness
    • 1179 Words
    • 5 Pages

    Sudden Illness

    one of the coronary arteries supplying blood to heart is blocked,If attack is severe, victim may die. If…

    • 1179 Words
    • 5 Pages
    Good Essays
    Read More
  • Good Essays

    Heart Attack Paper
    • 1517 Words
    • 7 Pages

    Heart Attack Paper

    Other Names for a heart attack include the name Myocardial Infarction, Coronary Thrombosis and Coronary Occlusion. A Heart attack occurs when blood supply to part of the heart muscle itself is severely reduced or stopped.…

    • 1517 Words
    • 7 Pages
    Good Essays
    Read More
  • Better Essays

    The Risk Factors of Heart Attack
    • 1612 Words
    • 7 Pages

    The Risk Factors of Heart Attack

    Heart attack is the death of a segment of heart muscle caused by the loss of blood supply. The blood supply is usually lost because a coronary artery, one that supplies blood to the heart muscle, has a blood clot, a blockage also known as coronary thrombosis or coronary disease. ("What Is A Heart Attack? What Causes A Heart Attack?" 2013) Heart disease is the number one killer of both men and women in America with approximately 460,000 related deaths due to a sudden and unforeseen heart attack. Of those who die, almost half suffer an attack so suddenly that they do not have time to call an ambulance or get to a hospital in time. (Fleet, 2013, p. 1) Its symptoms will actually vary from person to person; in fact some people will go from having no symptoms to just a few ones that they will be surprised to learn that they have already gotten a heart attack. The heart attacks without any symptoms are called silent heart attacks. ("What Are The Symptoms Of A Heart Attack?" 2013) Most heart attacks usually involve some kind of discomfort in the chest; it usually last a few minutes, goes away and then comes back. Sometimes it feels like heartburn or indigestion. Other people will feel pain or discomfort in one or both arms, the back, shoulders, neck, jaw, or upper part of the stomach. Shortness of breath while resting or doing a little bit of physical activity can also be encountered. Breaking out in a cold sweat, women feeling unusually tired for no apparent reasons, feeling sick to the stomach and vomiting, feeling lightheaded and dizzy are also other common symptoms associated with heart attack. ("What Are The Symptoms Of A Heart Attack?" 2013)…

    • 1612 Words
    • 7 Pages
    Better Essays
    Read More
  • Good Essays

    Heart Attcks
    • 650 Words
    • 3 Pages

    Heart Attcks

    Each Year 1.1 Million people in the United States have heart attacks and almost half of them die. Even though heart attacks isn't the end of a person's life, people can still live an active, productive life after a heart attack, because people can live healthier lives and people can go about doing things like before. This disease will take you by surprise all of a sudden. It may be surprising that while many women believe breast cancer is most threatening to them, it is a fact that they are eight times more likely to die of a heart attack. There are many reasons people have heart attacks like smoking, eating an unbalanced diet, and living a sedentary lifestyle. Heart attacks can also be inherited genetically. Heart attacks happen as a result of coronary heart disease, also called coronary artery disease. Coronary heart disease is a condition in which a waxy substance called plaque builds up inside the coronary arteries. These arteries supply oxygen rich blood to your heart. When this plaque builds up in the arteries, atherosclerosis then happens. Coronary Artery Disease which often leads to a heart attack is by far the leading cause of death of both men and women. Other Names for a heart attack include the name Myocardial Infarction, Coronary Thrombosis and Coronary Occlusion. A Heart attack occurs when blood supply to part of the heart muscle itself is severely reduced or stopped. Plaque build up is one way of causing a heart attack, deposits of fat like substance this is when plaque blocks in artery and eventually bursting, tearing, and even rupturing where in which a blood clot forms and blocks the artery. This is and when a heart attack takes place. But as well there is also soft and vulnerable plaque in which doctors used to believe that the reason for heart attacks and strokes were the buildup of fatty plaque within an artery leading to the heart or the brain. Researchers are now founding out that people who have heart attacks do not have arteries severely…

    • 650 Words
    • 3 Pages
    Good Essays
    Read More

Related Topics