Which of the Following Is True Regarding Unmyelinated Nerve Fibers

question 57

Multiple Choice

Which of the following is true regarding unmyelinated nerve fibers in the PNS?

• A) A Schwann cell folds its plasma membrane around several fibers .
• B) A Schwann cells wraps its plasma membrane around each individual fiber as it does with myelinated fibers.
• C) An oligodendrocyte cells wraps its plasma membrane around each fiber as it does with myelinated fibers.
• D) Satellite cells cluster around each axon to form a pseudo-myelin sheath.

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Definitions:

Synaptic Pruning

The process by which extra neurons and synaptic connections are eliminated in the brain to increase the efficiency of neuronal transmissions.

Neurons

Specialized neurons in the nervous system that communicate information via electrical and chemical signals.

Complex Communication

The exchange of information that involves multiple layers of meaning and requires higher levels of understanding and interpretation.

Myelination

The process of coating the axons of neurons with a fatty substance called myelin, which speeds up the transmission of electrical signals in the nervous system.