A nerve fiber that conducts an impulse away from the neuron cell body.

Cell body
The bulbous part of a neuron containing the cell nucleus.

The branched extensions of a neuron that receive input from other neurons.

Fatty substance that forms a sheathlike covering around axons.

Nodes of Ranvier
Gaps between myelin sheaths on the axon of a neuron.

The cell organelle that contains nearly all the cell's DNA.

Schwann cells
Glia (non-neuronal cells) that surround the axon of a neuron, forming the myelin sheath.

Synaptic knobs
Tiny enlargements at the end of an axon that secrete neurotransmitters.
ANATOMY QUIZ :: Test, review and refresh your knowledge of the human body. This website offers free quizzes for students in medical school, nursing and biology. All labeling quizzes focus on basic anatomy knowledge: recognizing organs and memorizing their names. Mastering these essentials is the first step in learning complex anatomy subject matter.

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