Q: An axon is the relatively long tail-like part of a neuron. The outer surface of the axon membrane…
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Q: (a) Calculate the positive charge on the outside of a 0.10-m piece of axon when it is not conducting…
A: Given data : Length of axon membrane L = 0.10m Thickness of axon well d = 0.10 m Radius of axon r…
Q: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited =…
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Q: An axon is the relatively long tail-like part of a neuron. The outer surface of the axon membrane…
A: Given data: Dielectric constant, k =5 Distance, d = 1×10-8m Area of the plate, A =…
Q: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited…
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Q: An axon is the relatively long tail-like part of a neuron. The outer surface of the axon membrane…
A: Given: The value of the dielectric constant is 5. The thickness is 1x10-8 m. The area of the plate…
Q: Calculate the capacitance of the myelinated neuron membrane (axon), if its thickness is 0.8…
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Q: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited =…
A: Hey there, since you have posted a question with multiple subparts. We have solved the first three…
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Q: An axon is the relatively long tail-like part of a neuron, or nerve cell. The outer surface of the…
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Q: The giant axon of a squid is 0.5 mm in diameter, 10 cm long, and not myelinated. Unmyelinated cell…
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Q: In a typical mammalian cell, the net transport by the sodiumpotassium exchange pump that maintains…
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Q: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited =…
A: Hey there, since you have posted a question with multiple subparts. We have solved the first three…
Q: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited =…
A: Given data: The length of the axon membrane is L = 0.1 m The axon cell wall thickness is d=2.0×10-8…
Q: In Example 23.14 we estimated the capacitance of the cell membrane to be 89 pF, and in Example 23.15…
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Q: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited…
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Q: The nonpolar core of the membrane of a muscle cell has a thickness d = 4nm and a dielectric…
A: Since you have posted mutiple questions, I have solved first two parts of your problem. a)The…
Q: Assume the length of an axon membrane of about 0.10 cm is excited by an action potential (length…
A: Given: The length of the axon membrane is 0.10 cm or 0.0010 m. The thickness of cell is…
Q: 6. The giant axon of a squid is 0.5 mm in diameter, 10 cm long, and not myelinated. Unmycli- nated…
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Q: How many K* ions are on the outside of the axon assuming an initial potential difference of 7.0 x…
A: Given: K=2.9, d=1.5×10-8m , η=1.9×10-5μm
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Q: An axon is the relatively long tail-like part of a neuron, or nerve cell. The outer surface of the…
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Q: Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited =…
A: Solution: a) The capacitance of one axon cell is: C=kε0A/dC=kε02πrl/dBy substituting above…
Q: membrane (dielectric constant = 5, thickness = 1 x10 -8 m) is charged positively, and the inner…
A: Given values:- Dielectric constant,(k)=5 -----(1) Thickness,(d)=1 x 10-8 m -----(2) Area of parallel…
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- What is the magnitude of the electric field in unite of N/C across an axon membrane (1.00x10^0)x10-8 m thick if the resting potential is -(7.400x10^1) mV?Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited = nerve speed x pulse duration equal and opposite charge of negative organic ions, as shown in the figure below. Model the axon as a parallel-plate capacitor and take C = K² A/d and Q radius r = 1.6 × 10¹ μm, and cell-wall dielectric constant x = 2.9. = Positive charge layer Negative charge layer + External fluid Axon wall membrane No Axon radius = r + Internal fluid + How many sodium ions (Na+) is this? Na+ ions d + (a) Calculate the positive charge on the outside of a 0.10-m piece of axon when it is not conducting an electric pulse. (Assume an initial potential difference of 7.0 × 10-² V.) -2 9.03E-10 C How many K+ ions are on the outside of the axon assuming an initial potential difference of 7.0 × 10-² V? 5.639E9 K+ ions = 50.0 m/s X 0.0020 s = 0.10 m). In the resting state, the outer surface of the axon wall is charged positively with K+ ions and the inner wall CAV to investigate the…In a typical mammalian cell, the net transport by the sodiumpotassium exchange pump that maintains the 70 mV membrane potential is 500 singly charged ions per second. How much work does the pump do each second?
- Please help. The nonpolar core of the membrane of a muscle cell has a thickness d = 4nm and a dielectric constancy k = 20. (a) What is the surface capacity of the membrane? Express your response in microcoulombs per square centimeter. (b) During muscle contraction, the internal potential of the cell increases by about 100 mV. For 1 cm2 of membrane, how many Na+ ions must have entered the cell for this purpose? (c) The medium outside the cell initially contains 0.150 mol / L of Na + ions in solution. Considering that it extends to 1 µm from the cell, what is the decrease in Na+ concentration immediately after the change in potential? (d) Estimate the number of times the process can be repeated before the Na+ ion reserve is exhausted. Please show formulas ans steps for my own understandingAssume an axon has the same characteristics as the class example except the radius of the axon is 0.005 mm and the membrane thickness is 20.0 nm. The percentage fractional change in the concentration of Na+ ions in the axon during one action potential is %? Record the answer to the nearest one thousandth.12. (a) Using Eq. AQ=CAV and the data in the Table, calculate the number of ions entering the axon during the action potential, per meter of nonmyelinated axon length. (The charge on the ion is 1.6 x 10-19 coulomb.) (b) During the resting state of the axon, typical concentrations of sodium and potassium ions inside the axon are 15 and 150 millimole/liter, respectively. From the data in the Table, calculate the number of ions per meter length of the axon. Table 13.1 Properties of Sample Axons Hint: 1 F (farad) = 1coulomb/1 volt Property Nonmyelinated axon Myelinated axon Axon radius 5 x 10-m 5 x 10-6 m 1 mole /liter = 6.02 x 1020 particles (ions, atoms, etc. ) Resistance per unit length of fluid cm 6.37 x 10°2/m 6.37 x 10°2/m both inside and outside axon (r) Conductivity per unit length of axon membrane (gm) 1.25 x 10-4 mho/m In the resting state, the axon voltage is -70mV. During the pulse, the voltage changes to about +30mV, resulting in a net voltage change across the membrane of 100…
- 6. The giant axon of a squid is 0.5 mm in diameter, 10 cm long, and not myelinated. Unmycli- nated cell membranes behave as capacitors with 1 μF of capacitance per square centimeter of membrane area. When the axon is charged to the -70 mV resting potential, what is the energy stored in this capacitance?A myelinated axon conducts nerve impulses at a speed of 40 m/s. What is the signal speed if the thickness of the myelin sheath is halved but no other changes are made to the axon?The giant axon of a squid is 0.5 mm in diameter, 10 cm long, and not myelinated. Unmyelinated cell membranes behave as capacitors with 1 μF of capacitance per square centimeter of membrane area. When the axon is charged to the -70 mV resting potential, what is the energy stored in this capacitance?
- Calculate the capacitance of the myelinated neuron membrane (axon), if its thickness is 0.8 micrometres (um) using a value of area of 10-6 m2. The membrane wall is mainly lipids and you will need to find the value of the permittivity in your notes. Give your answer in picoFarads (10-12 F) NB 1um = 10-6 mThe velocity of spike propagation is proportional to the following combination of factors: 1 a C, V R„R, m Where a is the radius of the axon, Rm and R; are specific resistances of the membrane and the internal buffer, respectively. If we double the radius and simultaneously increase the concentration of salt inside the axon twice (i.e. R; decreases two times), by how many fold will the velocity change?What is the Potential difference from Va to Vb
