1. Pick the correct answer and2.Write a short explanationOutNa+ 120 mMINK+ 5 mMNa+K+12 mM125 mMCl 125 mMCl-5 mMA-1.2 108 mMAssume:1. Membrane is permeable to Na+and K+ but not to Cl-2. b = 0.02If the membrane becomes permeable to Cl-,the membrane potential would....a) Depolarizeb) Hyperpolarizec) Stay the same

When a membrane becomes permeable to chloride ions (Cl⁻), the Cl⁻ ions, which are negatively…

Answered: 1. Pick the correct answer and 2. Write…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

Answer the following questions about the resting membrane potential of cells (in other words, the electrochemical gradient of a cell at rest). 1. In regards to Na+ and K+, what is the ionic gradient of these ions across the plasma membrane? 2. What is the electrical charge just inside the plasma membrane and just outside the plasma membrane of a cell at rest? 3. What maintains this electrochemical gradient?
6. Please help answer all parts to this question, thank you so much!! :)
Draw and discuss an AP (action potential). Below this graph draw and discuss the conductance of the important ions moving across this membrane that makes the action potential work. a. Cardiac fiber (non automatic cells) b. SA (self excitable cells)
Under what conditions could the opening of a chloride channel actually depolarize a neuron rather than hyperpolarize it? i. The neuron is resting at -75 mV ii. The extracellular chloride concentration is lower than the intracellular chloride concentration iii. The neuron is close to its threshold of -55 mV O a. i only O b. ii only O c. i and ii only O d. ii and iii only O e. i, ii, and i O f. None of these
9. You are performing an experiment at with an artificial membrane (i.e not a living cell). You place a NaCl solution on each side of the membrane. You discover that if you place a 10-fold NaCl concentration gradient across this membrane (higher NaCl concentration outside than inside) you initially see a +20 mV membrane potential develop. If the Cl permeability is assigned a value of 1, what value would you assign to the Na" permeability? Assume 2.3RT/F = 60 mV.
9. If sodium permeability (Pna) increases compared to normal, what is the effect on the membrane potential? (determine: change in charge on the inside of the membrane and polarity)
35.Given the following table, calculate the Resting Membrane Potential (in mV, rounded to the nearest tenths), using the GHK equation. Ion [Outside] mM [Inside] mM Relative Permeability at Rest Nernst Potential (mV) K+ 4 130 1.0 -110.2 Na+ 130 5 0.04 67.4 Cl- 75 5 0.45 -97.5

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