What Do the Majority of Rail Movements Involve

question 22

Multiple Choice

What do the majority of rail movements involve?

• A) manufactured goods
• B) bulk liquids and coal
• C) low value, heavy commodities
• D) consumer goods

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Definitions:

Sensory Neurons

Nerve cells responsible for converting external stimuli from the environment into internal electrical impulses.

Dendrites

Branchlike extensions of neurons that receive electrical messages from other neurons.

Myelinated Fibers

Nerve fibers covered with myelin, a protective fatty layer that helps in the fast transmission of nerve impulses along the neurons.

Myelin Sheath

A protective covering made of myelin around nerve fibers, which increases the speed at which impulses propagate along the myelinated fiber.