Sheldon, Age 1, Will Most Likely Display a ________ Smile

question 58

Multiple Choice

Sheldon, age 1, will most likely display a ________ smile for a friendly stranger.

• A) brief, fleeting
• B) broad, "cheek-raised"
• C) reserved, muted
• D) "mouth-open"

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Definitions:

Voltage-gated Sodium

Channels that open or close in response to changes in membrane potential, allowing sodium ions to enter or exit cells, critical for the generation and conduction of electrical signals in neurons.

Potassium Channels

Protein channels in cell membranes that specifically allow potassium ions to pass through, playing key roles in maintaining cell potential and regulating cellular processes.

Trigger Zone

An area of the neuron, typically located at the axon hillock, where action potentials are initiated.

Cerebrum

Forebrain region that controls higher functions.