Written Laser Hair Removal Practice Exam

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Vellus hair serves what primary function for the body?

  1. Protection from UV radiation

  2. Insulation and temperature regulation

  3. Facilitating sweat evaporation

  4. Providing sensory feedback

The correct answer is: Insulation and temperature regulation

Vellus hair primarily functions in providing sensory feedback. Although vellus hair, often referred to as "peach fuzz," may not be as prominent as other types of hair, it covers much of the body and helps in detecting subtle changes in the environment, such as air movement, which can signal the presence of insects or other stimuli. While vellus hair may have secondary roles related to protection and thermoregulation, its key significance lies in enhancing the sensory function of the skin, making it sensitive to external stimuli. This capability helps the body respond to its surroundings effectively.

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