The Cardiovascular System: The Heart- Chapter 18 Heart Anatomy Size‚ Location‚ and Orientation * Approximately the size of a fist * Location * In the mediastinum between second rib and fifth intercostal space * On the superior surface of diaphragm * Two-thirds to the left of the midsternal line; balance projects to the right * Anterior to the vertebral column‚ posterior to the sternum Coverings of the Heart * Enclosed in pericardium‚ a double-walled sac
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Severe Sepsis affects 750‚000 Americans and causes more than 200‚000 deaths annually. Sepsis is a complex condition that results from an infectious process that represents the body’s response to infection and involves systemic inflammatory and cellular events that result in altered circulation and coagulation‚ endothelial dysfunction and impaired tissue perfusion (Kleinpell‚ 2005). Associated mortality rates with sepsis in the United States have remained largely unchanged for several decades. Through an
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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 A&PII: Ch. 18‚ page 2/5 Pathway of Blood Through the Heart Lungs pulmonary veins left atrium Left atrium bicuspid valve left ventricle Left ventricle aortic semilunar valve aorta Aorta systemic circulation Coronary Circulation
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during breathing skelete muscle "milking" action and 4. Why are the walls of arteries proportionately thicker than those of the correspondin higher pressure and fluctuations. veins are low pressure vessels arteries must withstand 211 Major Systemic Arteries and Veins of the Body 5. Use the key on the right to identify the arteries or veins described on the left. d i r o k j t c b w p q s m c y h e l a v ‚ f ‚ z 1. the arterial system has one of these; the venous system has two 2. these arteries
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Obesity and COPD are chronic health conditions with an increasing incidence globally. They are the major causes for increasing morbidity and mortality. COPD is diagnosed with the use of spirometry and BMI is used for the diagnosis of obesity (1). In the United States‚ 6% of adults have Chronic Obstructive Pulmonary Disease (COPD) and 35% are obese (2). There are cases present where patients have comorbid COPD and obesity. Pulmonary issues are associated with obesity‚ some of which include a decrease
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In my BIO 102 lab I have learned about the Microscope and Lab Safety‚ Sensory Organs (Eyes and Ears)‚ The Human Blood and Circulation‚ and Respiration. Once I first started this class this semester taught us about the Microscope and Lab Safety. According to google online dictionary a Microscope is an optical instrument used for viewing very small objects‚ such as mineral samples or animal or plant cells typically magnified several hundred times. We used this instrument to look at different types
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lamellarity‚ surface charge‚ sensitivity of pH changes and bilayer rigidity can be modified. Liposomes showed promising result in the drug delivery but their applicability is limited primarily to specific use because of short half-life in blood circulation. The circulation time of liposomes in the blood stream is dramatically increased by attaching polyethylene glycol (PEG) – units to the bilayer‚ known as long circulating (Stealth) liposomes. Main advantages of liposomes are that they offers suitable
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to restrain and localize the drug delivery device in the stomach or within the upper parts of the small intestine until all the drug is releasedConventional oral dosage forms such as tablets‚ capsules provide specific drug concentration in systemic circulation without offering any control over drug delivery and also cause great fluctuations in plasma drug levels. Although single unit floating dosage forms have been extensively studied‚ these single unit dosage forms have the disadvantage of a release
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pump the blood away from the heart and to the body to keep up with the incoming deoxygenated flow. This failure to pump blood can build up pressure and cause additional pumping resistance. The decreased cardiac output of heart failure causes the circulation to become backed up‚ and this is where the term “congested” comes into description. In respect to recognizing this condition in a physical assessment‚ some signs detected are from pulmonary congestion and an increased presence of blood retained
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flow and pressure based on the particular needs at a given time‚ such as during exercise where blood pressure and blood flow is increased (6). In the systemic heart‚ blood starts in the heart and is pumped from the left ventricle through the aorta to the tissue beds of the body. The blood then returns to the heart from the body through the systemic veins. It returns to the right atrium‚ and is pumped to the right ventricle. From the right ventricle the blood is pumped through the pulmonary arteries
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