The Atmosphere Is Divided into Several Distinct Layers

question 20

Multiple Choice

The atmosphere is divided into several distinct layers.The layer we live in is called the ________.

• A)stratosphere
• B)thermosphere
• C)troposphere
• D)mesosphere

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Definitions:

Excitatory Signals

Electrical or chemical signals that increase the likelihood of a neuron firing, promoting neural activity.

Action Potential

A temporary shift in the electrical charge of a neuron's membrane, leading to the transmission of a nerve impulse.

Threshold

The level of stimulation required to trigger a neural impulse.

Neural Impulse

Electrical signals that travel along neurons, facilitating the transmission of information throughout the nervous system.