20 The Heart PowerPoint® Lecture Presentations prepared by Jason LaPres Lone Star College—North Harris © 2012 Pearson Education‚ Inc. An Introduction to the Cardiovascular System • Learning Outcomes • 20-1 Describe the anatomy of the heart‚ including vascular supply and pericardium structure‚ and trace the flow of blood through the heart‚ identifying the major blood vessels‚ chambers‚ and heart valves. • 20-2 Explain the events of an action potential in cardiac muscle‚ indicate the
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The Human Heart The Human Heart is one of the most important organs in the entire human body. The heart is a muscular organ that acts like a pump to continuously send blood through the body. The heart beats approximately about seventy-two times per minute of our lives. Without the heart’s pumping action‚ blood can’t circulate within the human body. The heart is enclosed in a double walled sac called the Pericardium. The pericardium has outer and inner coats. The outer coat is tough and thickened
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Diagnosis: Heart Failure Defined: “An abnormal clinical condition involving impaired cardiac pumping that results in pathophysiologic changes in vasoconstriction and fluid retention” (Lewis‚ Heitkemper‚ Dirksen‚ O’Brien‚ Bucher‚ 2007‚ p. 821). Risk factors: Increasing age and coronary artery disease are the two main risk factors for heart failure. Heart failure may also develop by other contributing risk factors‚ such as cigarette smoking‚ diabetes‚ high cholesterol‚ obesity‚ and hypertension
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of the heart October -08 -12 TUBE FORMATION • 15 days after conception ○ Begins as flat sheet of mesodermal cells (cells of the mesoderm layer in an embryo) • Day 18-20 ○ The cells form a horse -shoe shape (cardiogenic region) ○ Angiogenic cell clusters coalesce to form right and left endocardial tubes • Day 21 ○ Two endocardial tubes are completely fused • Day 22 ○ Heart begins beating • Day 23 ○ Heart tube forms constrictions prior to looping The first indication of heart development
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Finding out you or a loved one has a heart murmur can be frightening. Anything that causes heart complications is frightening. A heart murmur is an extra or unusual sound heard during your heartbeat. Although heart murmurs are common and need to be taken seriously‚ they are often quite harmless. Heart murmurs are most common in healthy children who can possibly out grow the symptom. With normal tests‚ doctors can find out the cause of a heart murmer and help with the problem. There are many alternate
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The heart is one of the most important organs in your body. So what does it do? It’s function is to pump blood to all the other organs. But the heart can not function alone‚ it has other organs and blood vessels helping it. The human heart is a pear shaped and about the size of a human fist. It is made of muscle and there are three different layers. The outer layer is called the epicardium. The middle layer is called the myocardium which is made of muscles that contract. The inner layer is called
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A heart attack is also known as a myocardial infarction. A heart attack is when a part of the heart muscle is damaged or dies because it is not receiving oxygen. A heart attack is the death of heart muscle and it is caused by a sudden block of a coronary artery by a blood clot. Coronary arteries are blood vessels that supply the heart muscle with blood and oxygen. Causing injury to the heart muscle can cause chest main and pressure. If blood flow is not restored within 20 to 40 minutes permanent
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Hashimoto’s Disease vs. Graves Disease Anna Grochowski Salter College Anatomy and Physiology II September 18‚ 2013 Dr. P. Wong Hashimoto’s disease can also be called chronic lymphocytic thyroiditis or autoimmune thyroiditis. An autoimmune disease happens when the body’s immune system attacks it’s own cells and organs instead of its normal job of protecting the body from infection. Hashimoto’s disease specifically attacks the thyroid gland‚ causing inflammation
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Kawasaki disease is a condition that causes inflammation in the walls of small and medium sized arteries throughout the body‚ including the coronary arteries. Kawasaki disease is also called mucocutaneous lymph node syndrome because it also affects the lymph nodes‚ skin‚ and the mucous membrane inside the mouth‚ nose‚ and throat. Kawasaki disease occurs most frequently in Japan‚ where the disease was first discovered. It is a rare childhood disease and occurs mostly in boys than girls. It mostly
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Treatment for Neurodegenerative Diseases The McGovern Institute claims‚ “Brain disorders are among the most serious health problems facing modern society” (“Neurodegenerative Diseases and Brain Injury”). The term neurodegenerative refers to the progressive breakdown of nerve cells (Mandal). Due to the aging population‚ the demand for a definitive cure is on the rise. To date‚ a cure for this condition has not been discovered. However‚ research has revealed preventative measures that decrease a
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