Examlex
Which of the following agencies is the initial central personnel agency of the national government?
Glial Cells
Non-neuronal cells in the central and peripheral nervous system that support, protect, and provide a supportive framework for neurons.
Axons
Long, threadlike parts of nerve cells which transmit electrical impulses away from the neuron's cell body.
Myelin
A fatty substance that surrounds and insulates the axons of nerve cells, speeding up the transmission of electrical signals in the nervous system.
Antagonist
A substance that blocks or dampens a biological response by binding to and blocking a receptor rather than activating it.
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