Imagine a Large City in Which a Downtown Business District

Multiple Choice

Imagine a large city in which a downtown business district is linked to outlying suburbs by a system of subway trains.The spinal cord's sensory neurons may be likened to the system's ___ trains; the spinal cord's motor neurons are analogous to the ___ trains.

A) local; express
B) outbound; inbound
C) express; local
D) inbound; outbound