Definition

Referring to nerve fibers that do not have a protective myelin sheath, which can affect the speed of nerve signal transmission.

Example

Nonmyelinated fibers transmit signals more slowly than myelinated fibers.

Conversation

Did you know that some nerve fibers are nonmyelinated?

Really? I thought all of them were myelinated for speed.

Nope, nonmyelinated fibers actually conduct signals slower.

That makes sense! It's fascinating how our bodies work.

Synonyms & Antonyms

Root Explanation

Nonmyelinated → It is formed from "non-" (meaning not) and "myelinated" (from Greek "myelos", meaning marrow or spinal cord, and the suffix "-ated", indicating a condition). The term "nonmyelinated" refers to nerve fibers that are not covered with myelin, which is a protective sheath that enhances the speed of nerve signal transmission.

Memory Tip

Think of 'non-' meaning not, and 'myelinated' referring to the protective covering of nerve fibers. This helps you remember that nonmyelinated means lacking that protective sheath.

Visually Confused Words