Among the cable properties of axons are the fact that
A) subthreshold signals degrade with distance from the point of stimulation.
B) a high rate of firing produces a stronger response in muscle.
C) subthreshold signals grow in size with distance.
D) subthreshold signals remain constant in size along the axon membrane.
E) subthreshold signals grow in size as time passes.

Question

Quizplus · Accepted Answer

Subthreshold signals are weakened with distance as they travel down the axon due to the passive decay of electrical current along the cable. This is known as cable properties of axons. Choice B is incorrect as a high rate of firing can produce fatigue in the muscle instead of a stronger response. Choice C and E are also incorrect as subthreshold signals do not grow in size with distance or time. Choice D is incorrect as subthreshold signals also weaken with distance.

Among the Cable Properties of Axons Are the Fact That