A membrane's length constant will be greatest when
A)Rm is low.
B)Rᵢ is low.
C)Rm is high.
D)both B and C

Question

Quizplus · Accepted Answer

The length constant of a membrane, which indicates how far along an axon an electrical impulse can effectively travel, is greatest when the membrane resistance (Rm) is high and the internal resistance (Rᵢ) is low. High Rm means the membrane is better at retaining current, and low Rᵢ means less resistance to current flow inside the axon.

A Membrane's Length Constant Will Be Greatest When