Name: Nikia Martinez Class: Biology 240L L3-1201 Assignment: Electrocardiography Lab Report Due: April 3rd 2012 Professor: Dr. B. Schoffstall Introduction In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary valve and into the pulmonary trunk. Blood is then distributed from the right and left pulmonary arteries to the lungs, where carbon dioxide is unloaded and oxygen is loaded into the blood. The blood is returned from the lungs to the left
Aim In this experiment, the external and internal structures of a sheep’s heart was examined and identified by dissection. To determine the functionality of a human heart since they are both mammals. Hypothesis Based on the external observation, the left side of the heart appeared bigger than the right side. When looking
The heart size varies with body size pumping blood to Likewise, Blood flows from the right atrium to the right ventricle, and then is pumped to the lungs to receive oxygen. From the lungs, the blood flows to the left atrium, then to the left ventricle, forming the complete circulation.
Oklahoma 's Health Heart disease, also known as cardiovascular disease (CVD), is the leading cause of death in the world (World Health Organization [WHO], 2016). A depressing number of Americans are diagnosed with heart disease every year at 11.5% (Center for Disease Control and Prevention [CDC] 2016a). With 1 in every
According to the WHO, cardiovascular diseases have been the leading cause of death globally claiming 17 million lives a year, more deaths than all cancer combined (Chiu and Radisic, 2013). Cardiovascular disease is responsible for a preponderance of health problems and its impact is expected to grow further as the population ages. In the UK, NHS spends about £7.74 billion as the expenditure to deal with cardiovascular diseases (Barton et al., 2011). Cardiovascular disease in the form of myocardial infarction has become the principle cause of death in developed countries, accounting for nearly 40% of all deaths (http://www.bhf.org.uk/). Congenital heart defects, which occur in nearly 14 of every 1000 new-born children, is another tragic fact that baffles medical industry (http://www.heart.org/). About 61 million Americans (almost one-fourth of the population) live with cardiovascular diseases, such as coronary heart disease, congenital cardiovascular defects, and congestive heart failure.
Heart disease is known widely all over the world. It is the number one cause of death in the United States, especially in the state of Oklahoma. Even though America is counted as one of the most developed countries in the world, it is still facing an issue of finding a cure for these deadly diseases. However there can be solutions that can be implemented and used. Including raising taxes on unhealthy food and building sidewalks and tracks. In Oklahoma, the top causes of death are heart diseases and strokes (Heart Disease and Strokes). It is Oklahoma’s leading killer for both men and women, resulting in more than 9,000 deaths in 2012 (Understanding Heart Disease). Some of these heart diseases are Coronary Artery Disease, which is narrowing
Cardiovascular disease has reportedly been the number one disease killer for men and women in the United States of America. Every one out of four deaths is caused by heart disease in the United States alone (Centers for Diseases Control and Prevention). Heart disease refers to the different types of conditions and symptoms that can affect the one’s heart and its functions to the body (Mayo Clinic). Cardiovascular/Heart disease has many causes and conditions, prevention methods and symptoms, and treatment options.
The hearts function as a double pump that serves two circulations. The pulmonary pump in the right side of heart is provided for the gas exchange in the body, and the systemic circulation in the left side provides the functional blood supply to all body tissues. The functional blood to the heart is provided by the coronary arteries. Right coronary artery supplies the heart through the posterior interventricular and marginal artery branches; and the left coronary artery supplies the heart via anterior interventricular artery and the circumflex artery. The myocardium is drained by great, small, and middle cardiac veins which
The Heart and Blood Circulation The heart is a four chambered muscular pump around the size of a fist. It beats about 100,000 times a day pumping around 2,000 gallons of blood through about 100,000 miles of organic tubing. The heart is a big muscle with four valves connected together to make a two-stage pump. The heart gets its energy by oxidizing blood sugars. This released energy, contracts the heart’s many muscle cells, and the four chambers squeeze blood out into the arteries. The arteries are thick walled muscular tubes which carry blood away from the heart. The heart has two sides - the left ventricle and the right ventricle. The artery from the right ventricle pumps blood to The venae cavae collects oxygen depleted blood from the body and routes the blood to the right atrium in the heart. When the right atrium squeezes, it pushes blood through the tricuspid valve into the right ventricle. Like the other three heart valves this is a one way valve (blood can only flow in one direction). When the right ventricle contracts, it pushes blood through the pulmonary valve and on into the lungs. Because it does not take much pressure to get blood to the lungs and back, the right side is smaller than the left. The left side has to work harder pumping blood to the rest of the body. Blood in our
The Left Side Meanwhile, the left receives the now oxygen rich blood that comes from the lungs and is then pumped through the arteries. However, this time the left ventricle receives the
Your heart is not only a pump, but it is a muscular organ divided into the right and the left side of your chest( Heart Disease- Mayo Clinic) This division is known for protecting oxygen-rich blood from mixing with oxygen-poor blood( Heart Disease- Mayo Clinic).
The numbers involving heart disease fatality in the United States are very alarming. According to the Center for Disease Control and Prevention (2015)”about 610,000 people die of heart disease in the United States every year.” The most common type of heart disease is coronary heart disease (CHD) which takes the lives of over 300,000 people a year. (Center for Disease Control and Prevention, 2015) There are about 735,000 Americans who suffer from a heart attack every year. Of this number there are 525,000 people who are experiencing one for the first time, and about 210,000 people have had one before. (Center for Disease Control and Prevention, 2015) The rate of heart disease fatality differs based on the races of ethnic groups. The Center
Research by the American Heart Association (2014) states that heart failure effects an estimated 5.1 million Americans and it is predicted to increase 25% by 2030. Heart failure is a pathophysiological condition that indicates the heart is unable to promote enough cardiac output causing insufficient blood supply to the body. Pharmacological treatment for cardiac failure is dependent upon the ability to decrease rate of blood flow and blood pressure. Survival after heart failure diagnosis has improved with medication but the death rate remains high with over half of the people diagnosed with heart failure will die within 5 years. (Go et al., 2014)
According to the Centers for Disease Control and Prevention, or the CDC, “Heart disease is the is the leading cause of death in the United States for both men and women.” The American Heart Association, or the AHA, states that heart disease (and other cardiovascular diseases) kills more Americans annually than all cancers, including Chronic Lower Respiratory Disease, combined. Another shocking statistic, presented by the American Heart Association, states that
The blood flow both the pulmonary and systemic circuits in humans The cardiovascular system is made up of two circulatory routes, the pulmonary circuit and the systematic circuit. The blood is oxygenated in the lungs during the pulmonary circuit and then the oxygenated blood is circulated through the rest of