As a Traveler of This Time in History,Ibn Battuta Was

question 2

Multiple Choice

As a traveler of this time in history,Ibn Battuta was the first person to leave an eyewitness description of

• A)the southernmost tip of Africa.
• B)the eastern coast of Africa.
• C)Mali, Africa, south of the Sahara Desert.
• D)Korea and Japan.
• E)Australia.

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Definitions:

Synaptic Pruning

The process during brain development where extra neurons and synaptic connections are eliminated to increase the efficiency of neuronal transmissions.

Neurons

Specialized cells of the nervous system that transmit signals throughout the body; key components in the function of the brain, spinal cord, and peripheral nerves.

Axons

Long, threadlike parts of nerve cells along which impulses are conducted from the cell body to other cells.

Myelin

A fatty substance that surrounds the axon of some nerve cells, forming an insulating layer that speeds up the transmission of nerve impulses.