Although Trade Constricted in the Early Middle Ages,where and How

question 69

Short Answer

Although trade constricted in the early middle ages,where and how was it still going on?

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Definitions:

Extracellular

Pertaining to being outside the cell membrane.

Plasma Membrane

A biological membrane that separates the interior of all cells from the outside environment, controlling the movement of substances in and out of cells.

Permeable

A characteristic of materials that are able to allow liquids or gases to pass through them, especially through pores or interstices.

Gray Matter

The darker-colored area of the central nervous system; abundant in nerve cell bodies, dendrites, and axon terminals, associated with processing and cognition.