Signal propagation in the nervous system can be modeled as a) A resistor network.

b) A wave of electricity that travels down conducting tissue.

c) A series of RC circuits.

If 25 ml of each of the liquids in the answer choices below were poured into a 100 ml beaker, which would form the second from the bottom layer? a. sea water – density of 1.024 g/ml b. mineral oil – density of 0.910 g/ml c. distilled water – density of 1.0 g/ml d. petroleum oil – density of 0.820 g/ml