Arkansas Esthetician Practice Exam

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What is responsible for sending messages in the form of electrical nerve impulses?

Neuron soma
Nerve terminals
Glial cells
Schwann cells

The correct answer is: Nerve terminals

Nerve terminals are responsible for sending messages in the form of electrical nerve impulses. This is because nerve terminals house synaptic vesicles containing neurotransmitters, which are chemicals that carry messages across synapses to neighboring neurons or target cells. Options A, C, and D are incorrect because they do not play a direct role in sending messages in the form of electrical nerve impulses. Neuron soma, or the cell body, contains the nucleus and other organelles responsible for maintaining the neuron's metabolic and structural functions. Glial cells, while important in supporting and protecting neurons, do not directly send messages. Schwann cells are a type of glial cell that form the myelin sheath around axons, but they do not directly send messages.