Examlex
Identify the letter of the choice that best matches the phrase or definition.
-An activity that does not involve other people or resources.
White Blood Cells
Cells of the immune system involved in defending the body against both infectious disease and foreign materials.
Myelin
Fatty material produced by neuroglial cells; insulates axons and thus speeds conduction of action potentials.
Neuroglial Cells
Supportive cells in the nervous system that provide insulation, nutrients, and structural support for neurons, and participate in signal transmission.
Myelin
A fatty covering that insulates nerve fibers in the brain, spinal cord, and peripheral nerves, speeding the transmission of nerve impulses.
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