Louisiana Esthetics State Board Practice Test

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Which of the following is a characteristic of lice?

  1. They burrow into the skin

  2. They are microscopic and unseeable

  3. They are infections rather than parasites

  4. They feed on human blood and live on skin

The correct answer is: They feed on human blood and live on skin

Lice are indeed characterized by their feeding habits and their living environment. They are ectoparasites, meaning they live on the surface of the host's body, specifically in the hair and sometimes on clothing. One of their main characteristics is that they feed on human blood, which is essential for their survival. This blood-feeding behavior leads to irritation and itching in the host. Unlike some other parasites or insects, lice do not burrow into the skin; they remain on the outer layer. Additionally, while they can be small, they are visible to the naked eye, rendering the notion of them being microscopic inaccurate. Lastly, lice are classified as parasites rather than infections, as they are living organisms that thrive on a host. This distinction emphasizes their role in infesting a host rather than causing an infection through pathogen entry.

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