The Insulating Material That Covers Many Vertebrate Axons Is Called

question 55

Multiple Choice

 The insulating material that covers many vertebrate axons is called the ____.

• A) dendrite
• B) myelin sheath
• C) cell body or soma
• D) presynaptic terminal

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Definitions:

Depolarization

The process by which the electrical charge of a cell membrane becomes less negative, leading to the generation of an action potential in neurons.

Hyperpolarization

A change in a cell's membrane potential making it more negative, typically reducing the likelihood of generating an action potential.

Terminal Button

The small knoblike structures at the ends of axons that release chemical signals from the neuron into the synapse.

Axon Hillock

The cone-shaped region of an axon of a neuron where the axon originates from the cell body, and is considered the decision point for neural action potentials.