2) At high altitude The effects of high altitude on humans are considerable. The percentage saturation of hemoglobin with oxygen determines the content of oxygen in our blood. After the human body reaches around 2‚100 m (7‚000 feet) above sea level‚ the saturation of oxyhaemoglobin begins to plummet. However‚ the human body has both short-term and long-term adaptations to altitude. Athletes use these adaptations to help their performance. There is a limit to the level of adaptation; mountaineers
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Year 12 Biology Research Tasks Maintaining a Balance Task 3 Blood Technologies for Oxygen and Carbon Dioxide Measurements It is essential in our bodies that oxygen and carbon dioxide levels are in appropriate and healthy amounts within the bloodstream as the excess or lack of the gases becomes detrimental to the being. Fortunately‚ current medical technologies allow us to monitor and measure the levels of oxygen and carbon dioxide within the bloodstream with a simple test. The pulse oximeter and
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assumed that baby Amira is in respiratory distress. Amira is currently receiving 30% flow-by oxygen at 10 minutes old to maintain oxygen saturation (Sa02) levels of 92%. Although the target Sa02 level at 10 minutes old is between 85-90% (Department of Health and Human Services‚ 2014) the fact that Amira is still displaying signs of nasal flaring and moderate work of breathing despite receiving flow-by oxygen is concerning. After conducting a brief initial top to toe assessment‚ weight and length‚ Amira
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Plan I plan to investigate how light intensity affects the rate of photosynthesis in pondweed. The rate of photosynthesis will be measured by the number of bubbles given off (considering that oxygen is produced as a waste gas during photosynthesis). The light intensity is measured by the distance between the lamp and pondweed. Fair test: Fix: the amount of pondweed‚ the amount of water and sodium hydrogen carbonate solution in the test tube‚ the time allowed for each experiment Change: the
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Experiment for the measurement of carbon dioxide and oxygen concentrations and their functions during the act of breathing. Introduction: Humans‚ like all living organisms need‚ O2 in order to live‚ they take the necessary O2 from the atmospheric air. The O2 is transferred from the blood to all cells of the body and serves for oxidation of nutrients for example glucose. By oxidize the nutrients released energy‚ which is necessary for the functions of the human body. During oxidation produces
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blood into and out of the lungs (Porth‚ 2011)‚ this leaves Margaret at risk of developing respiratory failure (National Institute of Health‚ 2011). The oedema in Margaret’s alveoli is restricting the flow of oxygen in the blood (Porth‚ 2011). Margaret is having trouble with the exchange of oxygen and carbon dioxide‚ a rise in carbon dioxide in the blood sends signals to the brain to increase breathing and to breathe deeper (Starr‚ Evers & Starr‚ 2010). Margaret is lying on her left side and is
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Oxygen Supply and Demand Analysis Oxygen Supply To determine Mr. Stewart’s overall oxygen supply‚ we assessed his cardiac output and arterial oxygen content. Each of these components contribute to oxygen supply and will be discussed in more detail below. Cardiac Output Cardiac output is the amount of blood ejected from the heart in one minute and is calculated by multiplying stroke volume and heart rate (Gillespie‚ 2012b). Stroke volume is influenced by preload‚ afterload‚ and contractility. Preload
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month old boy who was born at 26 weeks and diagnosed with chronic lung disease. He was sent home on 0.3 litres (L) of oxygen per minute with the view of gradually weaning this down as he grew stronger. When I joined the community nurse visiting Sam at home‚ he had been weaned down to 0.1L of oxygen per minute‚ so was now having his time on oxygen weaned down; from continuous oxygen eventually to none. The community nurses follow the trust’s nursing assessment guidelines which are based on The Twelve
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other muscles that promote ventilation Major Functions of the Respiratory System To supply the body with oxygen and dispose of carbon dioxide Respiration – four distinct processes must happen Pulmonary ventilation – moving air into and out of the lungs External respiration – gas exchange between the lungs and the blood Major Functions of the Respiratory System Transport – transport of oxygen and carbon dioxide between the lungs and tissues Internal respiration – gas exchange between systemic
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d) In the lungs and tissue e) i) Deoxygenated blood has less oxygen than the alveolar air. ii) This causes oxygen to diffuse out of the alveolus into the blood capillaries. f) Oxygen molecules pass through and dissolve in the thin film of moisture in the alveolar wall. The oxygen then pass through the thin layer of alveolar epithelial cells and the endothelial cells of capillary wall. g) Oxygenated blood has more oxygen and less carbon dioxide than the tissue. 3. a) A – Water
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