Please ASAP. Thank you If the resting membrane potential is -65, give the direction of the flow of Na+, Ca++, K+, and Cl- ion? Na and Cl flows inside, K and Ca flows outside K and Ca flows inside, Na and Cl flows outside Na and K flows inside, Ca and Cl flows outside Na and Ca flows inside, K and Cl flows outside

Please ASAP. Thank you If the resting membrane potential is -65, give the direction of the flow of Na+, Ca++, K+, and Cl- ion? Na and Cl flows inside, K and Ca flows outside K and Ca flows inside, Na and Cl flows outside Na and K flows inside, Ca and Cl flows outside Na and Ca flows inside, K and Cl flows outside

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter39: Information Flow And The Neuron

Section: Chapter Questions

Problem 5TYK: The major role of the Na+/K+ pump is to: a. cause a rapid firing of the action potential so the...

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Please ASAP. Thank you What is the effect of membrane potentials on the movement of ions across a cell? use the following Nernst potential values:Sodium=+67mV; Potassium=-98mV; Calcium=+129mV; and chloride=-90mV
Please ASAP. Thanku. A local anesthetic (Na+ channel blocker) should do which of the following Make the resting membrane potential more negative Decrease the after hyperpolarization Block the rising phase of the AP None of these
Please ASAP. Thanku. Question 15 If Na+ channels are blocked by lidocaine (sodium channel blocker), what happens to the equilibrium potential for Na+? Becomes more positive Becomes more negative Does not change
Please ASAP. Thanku If one increases the intracellular concentration of Na+ around a neuron, what would happen to the resting membrane potential? I am not sure No effect Becomes more positive Less positive
Please ASAP. Thanku If one increased the extracellular concentration of K+, what would happen to the membrane potential? Cannot predict becomes more negative No change becomes more positive
Subject: Neurophysiology The neuron for this experiment is in a bath with [K+] = 2 mM and [Na+] = 150 mM. Calculate the Nernst Equilibrium potential for each ion. What is your estimate for the gNa and for gK? If you are more comfortable, use PNa and PK. Remember, these values should be between 0 and 1. What is the resting membrane potential for this cell? Draw an action potential for this neuron in this solution. Keep in mind that this neuron is in unusual solutions. Label each axis and indicate inward and outward currents. Be absolutely certain to label the peak voltage and threshold for the AP!
Please ASAP. Thanku. What is the effect of increasing the activity of HCN (Ih) channels on action potential firing rate?
Pleasea asap. thanku You measure the membrane potential and find that it does not change from time X to time Y. However, you find that current across the membrane has increased by a factor of 4 from time X to time Y. What most likely happened between time X and Y?
Neurons a. How does the neuron re-establish its resting membrane potential after an action potential? -Sodium (Na+) gated channels close -Sodium (Na+) gated channels open -Potassium (K+) and sodium (Na+) gated channels close -Sodium/ potassium pumps (Na+/K+ pumps) exchange ions b.Which of the ion channels utilizes a passive transport system (in other words, do not require ATP)? Mark all that apply. -K+ leak channels -K+ channels (gates) -Na+ leak channels -Na+ channels (gates) -Na+/K+ pumps c.The absolute refractory period occurs when the neuron is undergoing the action potential and implies it cannot be further stimulated. True or False d. After an action potential, as the neuron repolarizes, the resting membrane potential is immediately re-established True or False e.Match the type of gate or process with its overall effect on the neuron So Match each term with the best-fit description. Terms: Na+/K+ pump K+ voltage gate Resting membrane potential Hyperpolarization Na+ voltage gate…
Please ASAP. Thank you. Cyclic nucleotide gated channels (CNG ): Is this channel voltage sensitive? How is this channel gated?
i. Write an equation balancing the electrical potential and chemical potential for 3 Na+ and 1 Ca2+. Note that NCX is an antiporter, whereas SGLT1 is a symporter, thus the maximal electrochemical gradient of Ca2+ will be opposite that of glucose. ii. Rearrange this equation in to give intra-cellular Ca2+ as a function of extra-cellular Ca2+, intra-cellular and extra-cellular Na+, resting membrane potential. You should note the equation and substitution below. iii. Use the values below for extra-cellular Ca2+, intra-cellular and extra-cellular Na+, resting membrane potential to calculate intra-cellular Ca2+. Extracellular Na+ concentration is 140mM, intracellular Na+ concentration is 12mM, extracellularCa2+ concentration 2.5mM, and the resting membrane potential is -65mV.
Please ASAP. Thank you Ion Extracellular Concentration (mM) Intracellular Concentration (mM) Na+ 440 50 K+ 20 400 Cl- 560 52 Ca++ 10 1 If the resting membrane potential is -65, give the direction of the flow of Na+, Ca++, K+, and Cl- ion? Na and Cl flows inside, K and Ca flows outside K and Ca flows inside, Na and Cl flows outside Na and K flows inside, Ca and Cl flows outside Na and Ca flows inside, K and Cl flows outside

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		Na and Cl flows inside, K and Ca flows outside
		K and Ca flows inside, Na and Cl flows outside
		Na and K flows inside, Ca and Cl flows outside
		Na and Ca flows inside, K and Cl flows outside