Massage Therapist Practice Exam

Category - Body Systems<br />

Nerves consist primarily of what?
  1. Red blood cells
  2. Photons
  3. Protons
  4. Neurons
Explanation
Answer: D Nerves consist primarily of neurons
They communicate messages and signals in the nervous system. Neurons and axons, which are specialized types of neurons, both receive chemical and electric messages.
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