Free Heart Essays and Papers

Billy Shuibi
Bio 100
Strauss
11 May 2016

 Heart
 The heart is one of the most unique organs in the human body. Its capabilities and functions truly are amazing. The heart 's function is to pump blood throughout the body supplying oxygen and nutrients to tissues. The heart is the size of your fist and weighs roughly 8-12 ounces depending if you’re male or female. The heart pumps through 100 kilometers of blood vessels for blood that is 3 to 4 times thicker than water at 60 to 80 times minute

. The layers of the heart wall include epicardium, myocardium, and endocardium. Epicardium is the surface of the wall and it’s also called visceral pericardium. It contains serous membrane covering the heart. Myocardium is in the middle of the two layers it’s described as having a thick muscular layer of the heart. It serves as having contractions of the heart as well in containing fibrous skeleton in networking of collagenous and elastic fibers. Some of the functions are providing structural support

Heart disease, also known as cardiovascular disease, is a disorder that affects the heart. Heart disease is the leading cause of death of most ethnicities in the United States, including African Americans, Hispanics, and Whites. For American Indians or Alaska Natives and Asian or Pacific Islanders, heart disease is the second leading death. Although heart disease is often thought of as a problem for men, more women than men die of heart disease each year. The most common heart attack symptom in women

The heart is a thoracic organ responsible for systemic blood circulation and is surrounded by pericardium. The superior border of the heart can be found a finger’s breadth from the sternum, on the right side at the upper border of the third rib and on the left side at the lower border of the second rib. The inferior border of the heart can be found on the right side a finger’s breadth from the sternum on the 6th rib costal cartilage and on the left side 9cm from the midline in the 5th intercostal

A fish heart is one of the simplest vertebrate hearts. The circulatory system is a single circulation, with a two-chambered heart. The blood from the fish’s atrium is pumped into the ventricle. Blood is pumped to the gills from the ventricle where gas exchange occurs in the gill filaments. This is called gills circulation. The carbon dioxide is removed while the oxygen is taken in. This re-oxygenated blood is then transport to the rest of the body’s tissues and organs to get rid of carbon dioxide

healthy or not are killed by a deadly disease called coronary heart disease, CHD. Men and women suffer from heart attacks, but there is a greater percentage of attacks within the male group. Most people live without ever getting their heart check until they get older to get their yearly exam. Many methods have come about from doctors and scientists who work together to teach people how to live a healthy life to prevent heart disease. Coronary heart disease are caused by smoking, secondhand smoke included

“The heart” The Heart is a very important organ in the body. It is what keeps your blood flowing and your organs going. It is a tireless muscle that pumps more than two thousand gallons of blood every day. The blood that is pumped is filled with nutrition and oxygen (Colombo 7). It travels through out your body in less than sixty seconds. So it needs to be taken extra good care of. When abuse is put on the body, the heart’s performance is not at its best. The Heart is a major organ that needs loving

live and carry out everyday tasks, such as muscle movement and also breathing. In spite of these various important abilities that the body possesses, none are as immense as our cardiovascular system, more extensively the “Heart” of the cardiovascular system, the Heart. The Heart is the main source of how Red Blood Cells, RBC, combined with oxygen, gets distributed and directed throughout the body in addition to being connected to all the major veins and arteries, however what happens inside the atriums

American women, heart disease is also one of the major diseases killing our women. Heart disease is one of the nation’s leading causes of death in both woman and men. About 600,000 people die of heart disease in the United States (Americas heart disease burden, 2013). Some facts about heart disease are every year about 935,000 Americans have a heart attack. Of these, 610,000 are a first heart attack victim. 325,000 happen in people who have already had a heart attack. Also coronary heart disease alone

The function of the Heart: The heart is the centre of the circulatory system which functions as a pump for the movement of the blood through the body, through a transport system of arteries, veins and capillaries. If blood is the body’s fuel, the heart is its engine. When the heart is relaxed it is called diastole - the resting phase of the heart and when the ventricles of the heart contract, it is called systole - the working phase of the heart. The blood circulation is two closed systems. The

The Cardiovascular system contains the heart and blood vessels (which has arteries, capillaries, and veins). This system pumps the blood throughout the vessels all over the body to deliver substance to the cells of the body (like delivering food to cells) and removes waste from the cells (for example a garbage man picking up waste the cells do not need). (Fremgen, Bonnie F., Suzanne S. Frucht., 2013). Here’s a fun fact: A heart can beat without the body because of its own electrical impulses. As

In the early morning of December 3, 1967, in the least suspecting place, an unknown physician would perform the first ‘heart to heart’ transplant. Hailed as a major medical achievement, Christiaan Barnard would sky rocket to international stardom and go on to repeat his “successes.” Louis Washkansky, a South African grocer, suffering from end-stage heart failure. Heart failure is a clinical syndrome characterized by the heart’s inability to adequately pump blood to sustain the body’s metabolic functions

PRACTICAL EXERCISE 4 HEART STRUCTURE AND CIRCULATION Q.1 Describe the heart sounds you hear. Explain the origin of two sounds. Two heart sounds are normally heard through a stethoscope on the chest wall, "lab" "dap". The first sound can be described as soft, but resonant, and longer then the second one. This sound is associated with the closure of AV valves (atrioventricular valves) at the beginning of systole. The second sound is louder and sharp. It is associated with closure of the pulmonary

Heart is the giver of life and it sustains life. Everyone in this world wants to have a healthy life. All these connotations signify heart is a primary organ around which any living beings life is revolving. Having healthy heart plays an inextricable role in quality and the length of our life. The heart is inconsistently resilient and competent of a persistent workload but liable to disease and failure as the people don’t pay requisite care that the heart deserves. The heart is located in the center

The heart is a very important organ in the body. It’s around the size of someone’s hand closed up together in a fist and is located in the chest between the lungs. The main purpose of the heart is to pump blood around the body ( The Structure of the Heart). The heart consists of epicardium, myocardium, and endocardium layers that protect its walls. The epicardium is the membrane of the external heart surface. The endocardium lines the interior portion of the chambers in the heart. Lastly, between

Abstract:Dorland's Illustrated Medical Dictionary defines the heart as "the viscus of cardiac muscle that maintains the circulation of the blood". It is divided into four cavities; two atria and two ventricles. The left atrium receives oxygenated blood from the lungs. From there the blood passes to the left ventricle, which forces it via the aorta, through the arteries to supply the tissues of the body. The right atrium receives the blood after it has passed through the tissues and has given up much

These causes will change the heart significantly. The pathophysiology of heart failure is described differently as: (1) an oedematous disorder, by means of which the deviations in renal hemodynamics and excretory ability lead to salt and water holding; (2) a hemodynamic disorder, considered by peripheral vasoconstriction and decreased cardiac output; (3) a neurohormonal disorder, mainly by stimulation of the renin-angiotensin-aldosterone system and adrenergic nervous system; (4) an inflammatory

The purpose of the heart is to pump blood to all the body parts to nourish it. Heart failure does not mean that the heart has stopped working, but it means that the heart us not able to pump effectively to meet the needs of the body. When there is a defect in the heart or if it gets weaker than normal the heart is not able to pump blood into the circulation. Our body depends on the pumping action of the heart for the delivery of oxygen an nutrients to body parts in order to function properly. There

For correctly diagnosing various cardiac disorders, a detailed observation of the heart chambers, wall motions and valve functions is required. Echocardiography can provide information regarding the size and shape of the heart and the extent of any tissue damage. A number of segmentation algorithms are proposed for the analysis of cardiac chambers. Here, two methods are considered for extracting the four cardiac chambers simultaneously and in a fully automatic way. In the first method,Phase symmetry

the heart starts pounding until the time of death, it may beat more than 3.5 billion times. The center of the circulatory system is the heart. The average heart beats 100,000 times each day, pushing around 2,000 gallons of blood throughout your body. With a life span of 70-90, the heart will beat two to three billion times and circulate 50-65 million gallons of blood. The hearts role is to pump oxygenated blood to every cell in the body by having a continuous beat. Throughout time the heart has