Question

Nerve impulses are carried along axons, the elongated fibers that transmit neural signals. We can model an axon as a tube with an inner diameter of 10 μm. The tube wall is insulated, but the fluid inside it has a resistivity of 0.50 Ω⋅m. What is the resistance of a 2.0-mm-long axon? Express your answer with the appropriate units

Answer 1

Answer:

Explanation:

For resistance , the formula is

R = ρ l / S where ρ is resistivity , l is length and A is cross sectional area .

= .5 x 2 x 10⁻³ / 3.14 x (5 x 10⁻⁶)²

= .0127 x 10⁹

12.7 x 10⁶

12.7 MΩ