Chemistry 3 Lecture 5 CALCIUM HOMEOSTASIS AND HORMONAL REGULATION Roles of Calcium Signal transduction pathways àacts as a second messenger‚ in neurotransmitter release from neurons Contraction of all muscle cell types Fertilization Enzyme cofactor àblood-clotting cascade Proper bone formation PRINCIPAL ORGANS INVOLVED IN CALCIUM HOMEOSTASIS Small Intestines Bones (Skeletal System) Kidneys Normal Total Calcium: 2.2-2.6 mmol/L (9-10.5 mg/dL) Normal Ionized Calcium: 1.1-1.4 mmol/L
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Calcium Everyone needs to take care of its body as it is the only place you have to live in – living healthy life is the passion of people and spend much money but ever you thought what is the important ingredient of healthy lifestyle? Calcium is the most abundant mineral of the body and found naturally in many items that strengthen your bones‚ teeth and ensure other body systems work properly – you can get calcium from food but some people need to take medical supplements to enrich their body with
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History of Calcium- Calcium is a very interesting element that has a lot to tell about itself. There is much history to be learned about calcium. Calcium was actually discovered by Humphry Davy in 1808. Calcium’s name happens to come from the latin ‘calx’ meaning lime. Lime (calcium oxide‚ CaO) was a useful material that was created by heating limestone. Before the discovery of calcium‚ a man named Antoine Lavoisier classified the lime as “earth” because it was very difficult‚ almost
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the Solubility of Calcium Hydroxide Apparatus * Solid calcium hydroxide * 0.4 mol/dm hydrochloric acid * Distilled water * Pipette * Triple valve rubber pipette filler * Conical flask * Beaker * White tile * Clamp and stand * Methyl orange indicator Producing the calcium hydroxide solution 1. Roughly fill a beaker with 200cm³ of distilled water. This does not need to be accurate because samples will be taken from this. 2. Add solid calcium hydroxide‚ a spatula
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Describe the role of calcium in muscle contraction‚ where it is stored‚ and how it is released and recycled. Calcium storage‚ release‚ and recycling Muscles need to be malleable or have plasticity in order to function correctly. This is where calcium comes into the picture. All muscles use calcium molecules for regulatory and signaling purposes. Contraction control and relaxation control by calcium is achieved first by the activation of troponin-tropomyosin with the actin filaments. The second
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determine energy lost by Calcium Chloride and gained by Ammonium Nitrate when dissolved in Water. Theory: Exothermic reactions are when net energy is lost in process of reaction. When solid calcium chloride (chemical formula CaCl₂) is placed in water‚ the calcium chloride dissolves and liberates heat in the process. Calcium chloride is one of the ingredients in instant "hot packs" sold in retail stores. Some concrete mixes incorporate calcium chloride to decrease drying time. Calcium chloride is also used
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Standardization of hydrochloric acid by sodium carbonate Concentrated hydrochloric acid is roughly 11 M. Pour out into a measuring cylinder about 2 cm3 of concentrated hydrochloric acid. Transfer it to a 250 cm3 flask and make up to the mark with water. Shake well. Put some pure sodium hydrogen carbonate or anhydrous sodium carbonate into an evaporating dish and heat gently over a low flame for about fifteen minutes‚ stirring continuously. Take care not to heat the mass too strongly or fusion
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Analysis of a Metal Carbonate Lab Objective: In this lab we will determine the identity of a group 1 metal carbonate compound by gravimetric analysis. The unknown is weighed and dissolved in water and the precipitate is filtered‚ dried‚ and weighed. From the data the formula weight and identity of the unknown metal carbonate is determined. Lab Procedure: 1. Set up the Bunsen burner and ring clamp‚ light the burner and heat the crucible. 2. Add 2g of unknown carbonate to the crucible and
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CHAPTER I INTRODUCTION Generally‚ people use body and facial power to keep their skin soft and fresh and to feel comfortable‚ especially women who use this concentrate as a base for their make –up. Moreover‚ those who are living in relatively humid surroundings perspire profusely and with the help of Face and Body powder‚ they are able to reduce the odor and keep their skin dry for a longer period of time. However‚ these products are mixed with ingredients which can be harmful to
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Calcium oxalate (CaOx) being a major inorganic constituent of human kidney stones‚ contributes around 70-80% of the kidney stone. In India‚ approximately 5-7 million patients are suffering from kidney stone disease [6] (Kaladhar et al.‚ 2012). Urinary oxalate is found to be a major factor for calcium oxalate stone formation. As the molar ratio of oxalate-to-calcium is normally 1:10‚ slight changes in urinary oxalate concentration may
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