Equipment Calibration is defined as the act of adjusting and evaluating the precision and accuracy of measured equipment. It allows the user to get an accurate and precise reading of measurements to its actual true value. However‚ in order for the experiment to be effective is must consist of validity‚ reliability‚ and objectivity. Validity is defined as the ability of a test to measure what it claims to measure. Reliability is the consistency of test results and objectivity is defined as a test
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Buffer systems * prevent major changes in pH of body fluids by removing or releasing H+ * act quickly to prevent excessive changes in H+ concentration. Body’s major extracellular buffer system is “bicarbonate-carbonic acid buffer system”. There are 20 parts of (HCO3) to one part of (H2CO3). ---- [20:1]. When the ratio is no longer maintained‚ it will result to acid-base imbalance. Carbon dioxide is a potential acid; when dissolved in water‚ it becomes carbonic acid. Lungs under the
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Critique of an article from the Journal of Applied Physiology "Effect of different protocols of caffeine intake on metabolism and endurance performance" By Steve Bradley‚ BUSN 670‚ Queens University February 3rd‚ 2004 Introduction In 2002‚ a group of Australian researchers published a paper entitled the "Effect of different protocols of caffeine intake on metabolism and endurance performance". Caffeine use during sporting events has become much more popular and has widely studied. The
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Circulatory system From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search This article is about the organ system. For the band‚ see Circulatory System. For transport in plants‚ see Vascular tissue. Circulatory system | | The human circulatory system. Red indicates oxygenated blood‚ blue indicates deoxygenated. | Latin | systema cardiovasculare | The circulatory system is an organ system that passes nutrients (such as amino acids‚ electrolytes and lymph)‚ gases‚ hormones
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produce waste products. If you can not get rid of these metabolic waste products‚ they will accumulate to toxic levels and poison your body. The urinary system is very important because it perform the essential function of getting rid of these metabolic wastes. Main Structures of the Urinary System The main structures that make up the urinary system are two kidneys (contains nephrons)‚ two ureters‚ one bladder‚ one urethra‚ arteries and veins. The Ureter connects the kidney to the bladder. The bladder
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Excretory system Excretion is the removal of waste products of metabolism from our body system. Contents • 1 Excretory functions • 2 Component organs o 2.1 Lungs o 2.2 Kidneys o 2.3 Ureter o 2.4 Urinary bladder o 2.5 Urethra o 3 Urine formation4 Reasons For Excretion The excretory system removes metabolic and liquid toxic wastes as well as excess water from the organism‚ in the form of urine‚sweat‚urea or bile. This is important so as to help maintain balance within the organism
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OBJECTIVES: 1. List the organs that compose the cardiovascular system and discuss the general functions of this system. 2. Describe the location‚ size‚ and orientation of the human heart. 3. Define the term cardiology. 4. Describe the structure of the heart in terms of its coverings‚ layers‚ chambers‚ valves‚ and blood vessels. 5. Name the function of serous fluid around the heart. 6. Give another name for epicardium. 7. Describe the structure and function of the interventricular septum.
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Human Excretory System The human excretory system functions to remove waste from the human body. This system consists of specialized structures and capillary networks that assist in the excretory process. The human excretory system includes the kidney and its functional unit‚ the nephron. The excretory activity of the kidney is modulated by specialized hormones that regulate the amount of absorption within the nephron. Kidneys 1 ). They are bean-shaped organs located on either side of the backbone
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Human Physiology An Integrated Approach‚ 6e (Silverthorn) Chapter 7 Introduction to the Endocrine System 1) Which of the following is NOT a method of hormone action A) control of enzymatic reaction rates B) control of ion or molecule transport across cell membranes C) control of electrical signaling pathways D) control of gene expression and protein synthesis E) All are methods of hormone action. Answer E Section Title The Classification of Hormones Learning Outcome 7.1 Skill Level I Reviewing
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Respiratory system From Wikipedia‚ the free encyclopedia See also: Respiratory tract Respiratory system A complete‚ schematic view of the human respiratory system with their parts and functions. Latin systema respiratorium The respiratory system (or ventilatory system) is the biological system that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals‚ the anatomical features of the respiratory system include airways‚ lungs‚ and the respiratory
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