The Nervous System: Membrane Potential 1. Record the intracellular and extracellular concentrations of the following ions (mM/L): | Intracellular | Extracellular | Sodium (Na+) | 15 | 150 | Potassium (K+) | 150 | 5 | Chloride (Cl–) | 10 | 125 | 2. Excitable cells‚ like neurons‚ are more permeable to K+ than to Na+. 3. How would the following alterations affect the membrane permeability to K+? Use arrows to indicate the change in permeability. a. An increase in the number of passive
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Dehydration Jessica M. Hescott Lisa Morris May 11th‚ 2011 What is Dehydration & What causes it? Water is essential to maintaining a state of good health. Considering the adult body is comprised of nearly
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HYPERNATREMIA) AND SODIUM BALANCE (HYPOVOLEMIA AND EDEMA) Literature review current through: Sep 2013. | This topic last updated: ene 15‚ 2013. 1. INTRODUCTION — The plasma sodium concentration is regulated by changes in water intake and excretion‚ not by changes in sodium balance. hyponatremia is primarily due to the intake of water that cannot be excreted hypernatremia is primarily due to the loss of water that has not been replaced hypovolemia represents the loss of sodium and water edema
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the body are closely linked4. The polar nature of water allows electrolytes such as sodium ions to dissolve. The level of sodium within the body affects the amount of water in and around body cells. The body gets sodium from food and drink‚ and loses it in sweat and urine. Sodium plays an important role in water balance and is required to draw water through plasma membrane of body cells. This is because sodium and water move simultaneously‚ maintaining equilibrium of water and electrolytes across
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Results and discussion: I. a. How would you compare that relative reactivity of Na and k -Sodium and potassium react somewhat similar when reacting with water however they are slightly different. Sodium moves because of the hydrogen coming off of it and has a low melting point while potassium’s reaction is faster and enough heat is produced to set light to the hydrogen coming off of it. Each leaves a pink color hue in the water. Discuss the similarities and differences in the behavior of the metals
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Transparency examination‚ the presence of white particulate matter was noted. Possibilities include casts (indicative of disease - uncommon)‚ epithelial cells‚ crystal formation‚ or contamination. Further investigation is required to determine cause. Sodium levels were very slightly below normal‚ which is no cause for concern. WBCs were present in moderate amounts‚ possibly indicating a urinary tract infection. This could also be due to lack of aseptic technique during collection. The absence of nitrites
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Experiment 4: To recover cyclohexanone from the oxidation of cyclohexanol by hypochlorite Experiment 6: To recover adipic acid from the oxidation of cyclohexanone CHEMICAL REAGENTS Cyclohexanol Acetic Acid Chlorine (Bleach) Thymol Blue (indicator) Sodium Hydroxide These reagents were all used during experiment 4. APPARATUS USED Simple distillation apparatus 250mL round bottomed flask PROCEDURE: Experiment 4 8 mL of cyclohexanol was placed into a 250 mL Erlenmeyer flask‚ and then a thermometer
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but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood‚ paper‚ oil‚ clothing‚ etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Sodium carbonate Odorless white crystalline powder or lumps. Slightly alkaline (bitter) taste. pH (of freshly prepared 0.1 molar aqueous solution): 8.3 at
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hours. Voiding dark amber urine without difficulty. Intake for last 24 hours is 2500mL. Output is 2000mL including urine and NG drainage. Febrile and diaphoretic; BP 130/80; pulse 88; urine specific gravity 1.035; serum potassium 3.0 mEq/l; serum sodium 140mEq/l‚ CL 92mEq/l‚ Mg 1.4 mg/dL. 1.) Analyze the data in the case study. Do the findings indicate a fluid deficit or fluid excess problem? Support your answer with data from this patient. I would guess a fluid volume deficit. Dark amber urine
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ground level are the result of the rapid release of energy into the air‚ causing the air to expand faster than the speed of sound. This produces a shock wave‚ a sonic boom. The colors are produced by heating metal salts‚ such as calcium chloride or sodium nitrate‚ that emit characteristic colors. The atoms of each element absorb energy and release it as light of specific colors. The energy absorbed by an atom rearranges its electrons from their lowest-energy state‚ called the ground state‚ up to a
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