Question

3. axial resistance (R.) and membrane resistance( "increase/decrease by x-fold") By how much would () of a neuron change with the following changes in R )? (Your answer should read something like the length constant a. A 9-fold decrease in R b. A2 The C. The combined effects of a 9-fold decrease in R, and a 25-fold increase in R C. d. Assuming that conduction velocity is directly proportional to how much faster would an action potential travel in 3c compared to the initial conditions (i.e., no changes in R, or Rom)

Answer 1

ANS 3) In membrane resistance when the ions circulate through the membrane via other open channels
Consequently, neurons with higher membrane resistance that is fewer open channels have longer length constants
Axial resistance is the inner resistance to go with the flow , the bigger the diameter of the structure, there is more chance for the ions to drift.Therefore, neurons with decrease axial resistance that is larger diameter have longer length

a) A 9 fold decrease in R_{a :}

There will be an increase in length constant of a neuron $\lambda = \sqrt{} K a$

thus, the length of neuron will be 9 times more

b) A 25 fold increase in Rm:

There will be a decrease in length constant of a neuron by 25 times.

c) The combined effect will result in no change in length constant of a neuron