What Is the Function of the Myelin Sheath on a Nerve

question 51

Multiple Choice

What is the function of the myelin sheath on a nerve fiber?

• A) It acts as insulation to keep heat in.
• B) It acts as insulation to speed signal transmission.
• C) It acts as insulation to maintain separation between the negative and positively charged ions.
• D) It acts as a pathway for neurotransmitters to get to the neuron membrane.
• E) It keeps the neurotransmitters traveling lengthwise along the cells, rather than crossing into them from the side.

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