a blockage of the arteries | | |occurs to the brain. This causes the artery walls to harden. | |Portal Hypertension |This type of hypertension affects the veins. This is more associated with
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WHAT ARE THE HEALTH BENEFITS OF EXERCISE? Physical exercise is very important for a healthy body. To stay healthy and fit‚ we need to exercise regularly. Most people believe that exercise and work are the same. They believe that if they exert effort‚ flex their muscles during work‚ it is already an exercise. But exercise and work are not the same thing. Although both expend energy‚ exercise has an element of pleasure. When you work‚ you become tired‚ the same as when you exercise. But in exercise
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LOVENOX LOVENOX® helps reduce the risk of deep vein thrombosis—also known as DVT blood clots—to help avoid a potential pulmonary embolism in patients undergoing abdominal surgery‚ hip-replacement surgery‚ knee-replacement surgery‚ or medical patients with severely restricted mobility during acute illness. LOVENOX® should not be used in patients who are actively bleeding or who have a low count of blood cells called platelets‚ which aid in clotting. This is a condition called "thrombocytopenia
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1. PHOTOPLETHYSMOGRAPHY Photoplethysmography (PPG) is a simple and low-cost optical technique that can be used to detect blood volume changes in the microvascular bed of tissue (1). Pulse Photoplethysmography was introduced to the world by Hertzman in the year 1938. It is a noninvasive technique that makes use of light source and a detector. The change in blood volume is synchronous to heart beat and hence this method can indirectly measure heart rate. PPG has been used to assess skin
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Circulatory physiology Suggested reading Chapter 8 Topics to be covered Roles of circulatory system Design of circulatory systems Elements of circulatory systems Pumps Blood vessels Control of blood pressure and flow Adjustments for exercise BIO 3302 – SLIDE #1 Roles of the circulatory system Time to 95% equilibration of O2 by diffusion What animals need a circulatory system‚ and why? Once a circulatory system is in
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foods high in saturated fat that can raise your cholesterol should be avoided. Hypertension is another risk factor that can be controlled and overcome. Hypertension is when the heart contracts and the pressure is high enough in the arteries and veins that there is risk of rupture on an aneurism. Usually if this is the case the heart is working too hard and needs to be controlled with diet or medication. In most cases a low sodium diet or medications that contain a Beta blocker can be introduced
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decrease respectively. Normally a person perspires to cool off. This causes him to lose fluid and become dehydrated. As a result‚ the body has to come up with another way to cool off‚ so the blood vessels dilate. This lowers the pressure within the veins‚ allowing the blood to cool. Caffeine is a stimulant and causes increased HR‚ and when a person exercises‚ their heart rate increases. All of this is to meet the body’s metabolic needs‚ producing adequate perfusion. Heart rate is brought back to homeostasis
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near normal temperatures. 4. Joel feels little blood flowing to his hands and feet due to the vasoconstriction occurring. During this process the blood going to his extremities is being rerouting away from the dermal surface to a network of deep veins wrapped around deep arteries. When this occurs diffusion known as countercurrent exchange begins which traps heat closer to the body core and limits heat loss to the environment by reducing the temperature gradient between the arterial blood and the
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responsible to carry out the gas exchange. The Respiratory system is composed of nose‚ larynx‚ pharynx‚ trachea‚ bronchi‚ bronchioles‚ pleura‚ alveoli and diaphragm. The Circulatory system consists of the heart‚ blood vessels‚ arteries‚ arterioles‚ veins‚ venules‚ capillaries and blood. In this lab‚ we will only focus on the circulatory system. The heart is the main component of the circulatory system because it is responsible for supplying oxygen-rich blood and nutrients to the tissues‚ removing
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rate will move blood through the body more quickly and will stimulate the baroreceptors. An increase in arterial pressure causes an increase in firing of the arterial baroreceptors which will decrease sympathetic outflow to the heart‚ arterioles‚ veins‚ and increase parasympathetic outflow to the heart. 3. Define the term dysautonomia and briefly describe the condition known as neurocardiogenic syncope (NCS). Dysautonomia- a broad term to describe any disease of the ANS. Neurocardiogenic syncope-
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