The resistance of a material can be calculated with the following equation: ? = R where p is the resistivity, L is the length, and A is the cross-sectional area. What is the resistance of an axon's membrane segment with a length of 1 mm (enter your answer in units of M12)? [Note: This is the same calculation discussed in Part 1 of the lab manual.] • the diameter of the axon 10 m • the membrane thickness ~ 10 nm • the resistivity of the axoplasm ~1 S2-m • the average resistivity of the membrane-108 2-m • the segment length ~1 mm