Nebraska Barber State Practice Exam

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What do the secretory nerve fibers regulate?

  1. The excretion of perspiration and the flow of sebum

  2. The regulation of heart rate

  3. The movement of muscles in the hand

  4. The sensation of touch

The correct answer is: The excretion of perspiration and the flow of sebum

Secretory nerve fibers are involved in the autonomic nervous system, which controls involuntary functions in the body. These fibers specifically regulate the excretion of perspiration and the flow of sebum, which are important for maintaining body temperature and skin health. While the other options may involve nerve control, they do not specifically pertain to the function of secretory nerve fibers and can therefore be eliminated as incorrect choices. Additionally, they do not pertain to the autonomic nervous system and are not involved in the regulation of body temperature or skin health.

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