nongated K+ channels than cell B‚ which cell has the larger resting membrane potential? Explain. If the permeability to K is higher in A than in B‚ then the resting membrane potential (rmp) will be closer to the equilibrium potential in cell A‚ which means the rmp will be more negative in cell A than in cell B; or in other words‚ the potential difference will be LARGER in cell A. 2. Predict the effect of a reduced extracellular concentration of Na+ on the magnitude of the action potential in an
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Resting membrane potentials Definition: Large nerve fibers when not transmitting nerve signals is about 90 millivolt. That is‚ the potential inside the fiber is 90 millivolts more negative than the potential in the extracellular fluid on the outside of the fiber. The Na+-k+ pump also causes large concentration gradients for sodium and potassium across the resting nerve membrane. These gradients are the following: Sodium ( outside): 142 mEq/L Sodium ( inside): 14 mEq/L Potassium ( outside):
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Nervous System: Membrane Potential 1. Record the intracellular and extracellular concentrations of the following ions (mM/L): Intracellular Extracellular Sodium (Na+) Potassium (K+) Chloride (Cl–) 2. Excitable cells‚ like neurons‚ are more permeable to ___________ than to ___________. 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 K+ channels ___________
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Chapter 6 Resting Membrane Potential (RMP) What is the Resting Membrane Potential (RMP)? ELECTRIC POTENTIAL – separation of opposite charges between 2 points. (“Has the potential to do electrical work if allowed to come together!”) vs. large potential difference small potential difference Magnitude of charge separation = potential difference ** measured in volts (1 Volt
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regions of the neuron. Axon hillock‚ action potential The area where the axon emerges from the soma (cell body) is called the ___ ___. This is also where the outgoing signal‚ called a/an ___ ___ is generated. Collaterals‚ terminals An axon can branch‚ forming many axon ___. At the end‚ axons branch to form many axon ___. Schwann cells What support cell forms the myelin sheath? Integral proteins What structures in the cell membrane function as ion channels? 1) Charge 2) Size
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of sectors including agriculture‚ healthcare‚ workforce‚ and transportation. The transportation sector involves the taxation of gasoline. Gasoline balances on a positive and negative line. On one hand‚ it provides transportation for the majority of citizens and companies in North America. However‚ Menkes and Fawcett explain‚ “octane enhancing constituents of gasoline pose a number of health hazards including metallic (lead‚ manganese)‚ aromatic (e.g.‚ benzene)‚ and oxygenated additives in both industrialized
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The increasing value of I.T. : Why business needs I.T. Submitted by: PXA And CKD Submitted to: Submitted on: Information technology is any field that involves computer technology. This includes hardware maintenance‚ software development‚ networking solutions and technical support. Modern businesses all over the world rely on computers to function and maintain high standards of efficiency and customer service. Without IT professionals‚ companies would not have qualified
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more and more men are becoming unemployed than ever before. Consequently‚ men who are not financially secure are eight times less likely to marry a pregnant girlfriend. The rates of cohabitation have been increasing due to the new-found belief that a healthy relationship with or without a family can be successful without the need of marriage between the couple. This is why many couples have resorted to either divorce or cohabitation without marriage instead of choosing the traditional married life
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Strategic Management Journal Strat. Mgmt. J.‚ 24: 587–614 (2003) Published online in Wiley InterScience (www.interscience.wiley.com). DOI: 10.1002/smj.330 INCREASING FIRM VALUE THROUGH DETECTION AND PREVENTION OF WHITE-COLLAR CRIME KAREN SCHNATTERLY* Carlson School of Management‚ University of Minnesota‚ Minneapolis‚ Minnesota‚ U.S.A. White-collar crime can cost a company from 1 percent to 6 percent of annual sales‚ yet little is known about the organizational conditions that can reduce this cost
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vertebral bone density? Your answer : a. The saline injections will increase the rat’s vertebral bone density (indicated by a less-negative T score). Predict Question 2: What effect will the estrogen injections have on the estrogen-treated rat’s vertebral bone density? Your answer : a. The estrogen injections will increase the rat’s vertebral bone density (indicated by a less-negative T score). Predict Question 3: What effect will the calcitonin injections have on the calcitonin-treated rat’s vertebral
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