FORMATION OF BLOOD CLOTS Definition • A blood clot is a mass of blood cells and blood components that form to stop the bleeding that occurs when a blood vessel is injured. When a blood vessel is broken‚ platelets in the blood become sticky and clump together at the site of the injury. They begin to form a mass to stop the flow of blood. Description • Clotting is the body’s normal response to a bleeding injury. It is a necessary function to prevent a person from losing too much blood. Most
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Experiment IV Solubility of Dissolved Oxygen Purpose To demonstrate the effect of partial pressure‚ temperature and salinity on the solubility of dissolved oxygen and to demonstrate the interference of nitrite in dissolved oxygen analysis by the Winkler Method. To demonstrate the use of the oxygen electrode and the difference between activity and concentration. References 1. Mancy‚ K. H.‚ Jaffe‚ T.‚ "Analysis of Dissolved Oxygen in Natural and Waste Water‚" USDHEW Public Health Service
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from blood loss is at a high. The estimated time of death is 20 minutes and the drive to the emergency room is 25. From surveys of hospitals from all over the US is has been proven that 40 percent of all trauma deaths occur within 24 hours of the traumatic injury are due to blood loss(according to the National Trauma Institute)‚ there are an enormous amount of patients who die from a fixable wound but death is still welcomed through
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incompatibility between mother and fetus in Rh blood type. 4. What are antigens and antibodies? How do they interact to cause a transfusion reaction? * An antigen is a molecule that sometimes stimulates an immune response. An antibody is a blood protein produced in response to and counteracting a specific antigen. Antigens are what causes a person to need a transfusion because their body is resisting their own blood. Antibodies are what accept the new blood to use as their own. 5. What can cause
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1. The significance of lower than normal hematocrit is anemia. This can be caused by vitamin deficiency‚ loss of blood‚ bone marrow problems‚ or abnormal hematocrit. The effect of bacterial infection would cause not a decrease in hematocrit (420Allen) 2. Leukocytes are produced or stored in many locations in the body including: the thymus‚ spleen‚ and bone marrow. The two kinds of lymphocytes are B lymphocytes and T lymphocytes. Lymphocytes start out in the bone marrow and either stay there to
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Taking Blood Pressure How does someone know if they are healthy or not? Do they check their temperature‚ consistently check their weight‚ or do they calculate their body mass index? These are a few ways to keep track of one’s health. Another important way someone can ensure a healthy lifestyle is to check their blood pressure. The process of checking someone’s blood pressure can be confusing‚ but it can determine whether or not they are at risk for health problems and if they need to keep track
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Purpose: To determine the percent magnesium by mass in magnesium oxide and to observe if the percentage composition is constant by comparing class results. Hypothesis/Prediction: The percent composition by mass of magnesium in magnesium oxide will not change significantly with each group that conducted the experiment. The composition of each substance should stay the same and any differences must be due to some error. Materials:Magnesium stripCrucibleCrucible coverClay triangleIron ringRetort standTongsBalanceBunsen
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1. Hematocrit is what measures the red blood cells in blood. Red blood cells are important for transporting iron and oxygen and for creating energy. If the red blood cell count is lower-than-normal it could indicate several diseases and problems within the body. It may be due to anemia‚ bleeding‚ destruction of red blood cells‚ leukemia‚ malnutrition‚ low iron‚ folate‚ vitamin B12 and vitamin B6 or overhydration. A bacterial infection causes white blood cells to increase‚ since they are the cells
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11 Blood Chapter 12 The Circulatory System Chapter 12 The Lymphatic System and Immunity Chapter 14 The Respiratory System Daudi K. Langat‚ PhD January 2011 Chapter 11 Blood BLOOD COMPOSITION Blood plasma • Definition—blood minus its cells • Composition—water containing many dissolved substances (e.g.‚ foods‚ salts‚ and hormones) • Amount of blood—varies with size and sex; 4 to 6 L about average; about 7% to 9% of body weight BLOOD COMPOSITION
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Morphology of Human Blood and Marrow CELLS 1. Describe two main differences between neutrophilic band and neutrophilic segmented cells. Peripheral blood of a healthy individual contains 2% to 6% of the band neutrophils. They have a nucleus with a horseshoe or sausage shape they do not have a nucleus separated into lobes connected by a filament. The nuclear chromatin is clumped they stain various shades of pink and contain alkaline phosphatase. In normal peripheral blood of older adults they have
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