Figure 16.7 -According to Figure 16.7 in Your Textbook, Which River Carries

question 40

Multiple Choice

Figure 16.7
-According to Figure 16.7 in your textbook, which river carries the greatest sediment load in North America?

• A) the Columbia
• B) the Mackenzie
• C) the Mississippi
• D) the Colorado

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Definitions:

Neurotransmitters

Chemical substances in the nervous system that transmit signals from one neuron to another across synapses.

Terminal Buttons

The small knobs at the end of an axon that release chemicals known as neurotransmitters, which transmit signals to other neurons.

Myelin Sheath

A fatty layer that surrounds the axons of some neurons, providing insulation and improving the speed and efficiency of neural signal transmission.

Dendrites

Branch-like extensions of neurons that receive signals from other neurons and conduct them toward the cell body.