Anatomy Review: The Heart Graphics are used with permission of: Pearson Education Inc.‚ publishing as Benjamin Cummings (http://www.aw-bc.com) Page 1. Introduction • The heart is the transport system pump; the delivery routes are the blood vessels. Using blood as the transport medium‚ the heart propels oxygen‚ nutrients‚ wastes‚ and other substances to and past the body cells. Page 2. Goals • To review the anatomy of the heart. • To review the pulmonary and systemic circuits. • To review
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19 The Cardiovascular System: The Heart 1. How is the heart positioned in the mediastinum? It rests on the diaphragm‚ near the midline of the thoracic cavity‚ with about two-thirds of the mass lying to the left of the body’s midline. 2. Which layer of the pericardium is both a part of the pericardium and a part of the heart wall? Serous pericardium 3. What is the function of pericardial fluid? Reduces friction between the membranes as the heart moves 4. From most superficial
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calculate the fraction that will be used up after 6.0 minutes. 4. [15 points] The rate law for the decomposition of ozone to molecular oxygen 3 O3 (g) −→ 3 O2 (g) is rate = k [O3 ]2 . [O2 ] The mechanism for this process is k1 O3 O + O2 k−1 k 2 O + O3 −→ 2 O2 Derive a rate law from these elementary steps. Clearly state the assumptions you use in the derivation. Explain why the rate decreases with increasing O2 concentration. 5. [15 points] Consider the following
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Complexity of the heart Sumintera Rodriguez September 19‚ 2015 Kaplan University Complexity of the heart From a young age we are taught what the heart is from pictures‚ books and even signs that the heart is the color red‚ shaped with two humps at top and comes to a point on the end. On the daily we see commercials like cheerios explain to us how important it is to take care of our heart. Yet in all actuality the heart is a complex organ that not all are fully aware of and if were to actually
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During exercise your body must adapt to the added stress and pressure you are putting onto it. The heart plays a very important role in maintaining homeostasis during exercise. When exercising your heart rate increases and the “Left Heart” have to pump out more oxygenated blood to the entire body. The sympathetic nervous system also plays an important role during exercise. The sympathetic pathway comes out of the lower cervical and upper thoracic segments of the spinal cord. The sympathetic
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The Importance of Early Activity after Open Heart Surgery Open heart surgery is one of the most important procedures in today’s time. Some of the more common performed corrective procedures include myocardial revascularization‚ valve repair or replacement‚ repair of congenital or acquired structural abnormalities‚ placement of a mechanical assist device‚ and heart transplantation. The postoperative period is the most critical time when it comes to these patients; it is during this time that the
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18: The Cardiovascular System: The Heart You should be able to speak intelligently to all of these‚ but the bolded objectives are test material. Objectives Heart Anatomy 1. Describe the size‚ shape‚ location‚ and orientation of the heart in the thorax. 2. Name the coverings of the heart. 3. Describe the structure and function of each of the three layers of the heart wall. 4. Describe the structure and functions of the four heart chambers. Name each chamber and provide
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What is the heart? The heart is the organ that supplies blood and oxygen to all parts of the body. It is about the size of a clenched fist‚ weighs about 10.5 ounces and is shaped like a cone. The heart is located in the chest cavity just posterior to the breastbone‚ between the lungs and superior to the diaphragm. The heart is surrounded by a fluid filled sac called the pericardium. Blood is pumped away from the heart through arteries and returns to the heart through veins. The major artery of the
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Heart Diseases in the Philippines Mortality and morbidity The data we gathered shows that the average morbidity level during 2000-2004 almost did not change in 2005. However‚ the level of mortality is alarmingly increasing. This means that more people die from heart diseases than before. Since we are comparing average of 5 years with another succeeding year‚ we expected that the data won’t have significant differences just like in our data about mortality. This means that if we see big difference
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CHF Heart Failure: failure of the cardiac muscle to pump blood to meet the body’s metabolic needs CHF is a complication that can result from problems such as cardiomyopathy‚ valvular heart disease‚ endocarditis‚ Acute MI Left-sided failure pulmonary congestion dyspnea‚ Paroxysmal nocturnal dyspnea Pulmonary edema‚ rales (crackles) cough blood-tinged‚ frothy sputum
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