Chapter 25 Quiz Laser

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Question 1 of 5

1. Question
2 point(s)
The protein contained in a corneocyte that is primarily responsible for providing barrier function is:
- kinetin
- collagen
- keratin
- melanin
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Question 2 of 5

2. Question
2 point(s)
With respect to skin cell turnover rates, the lesson video claims that some research has shown that the skin begins to thin at a rate of ____________% every _________years.
- 6, 20
- 20, 6
- 10, 10
- 6, 10
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Question 3 of 5

3. Question
2 point(s)
Chevlon has just introduced a revolutionary new non-prescription skincare product that claims to rejuvenate the entire epidermis in 3 days. Based on the lecture, the following accurate reason(s) explain why this claim can or cannot be true. Select ALL that apply.
- The Chevlon product’s claim is true because with the addition of non-prescription mrna transcription modulators, women over 60 can expect to speed up their skin cell turnover rates from 28 days down to three.
- The Chevlon product’s claim cannot be true because even if the epidermis were completely removed by an agent like a chemical peel, it would still take longer than 3 days to regenerate a new epidermis.
- The Chevlon product’s claim cannot be true because if this non-prescription product were somehow able to achieve a 3 day skin cell turnover, the product would very likely be classified as a drug which would require a prescription to obtain.
- The Chevlon product’s claim could possibly be true if the patient were under 20 years old as most younger people have the ability to regenerate the epidermis in under 10 days and this product could just speed that process up.
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Question 4 of 5

4. Question
2 point(s)
In the lesson video, with respect to the skin “thinning” over time, some research indicates that the layer or structure of the skin that is most affected is the ________________. Choose the BEST answer.
- entire dermis
- stratum basale
- reticular dermis
- papillary dermis
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Question 5 of 5

5. Question

2 point(s)

In many lessons, the concept that the form of a structure or tissue dictates its function. Please match the structures below to their correct functions. Some structures may or may not be used more than once.

Sort elements

rete ridges
corneocyte
stratum basale
reticular dermis

a STRUCTURE that increases surface area between layers AND provides stability for adjoining layers

after ejecting its nucleus this cell provides barrier functions to the skin among other things

This is the only layer in the skin that is comprised of a single layer of cuboidal shaped cells, that efficiently allows the exchange of oxygen and nutrients to other layers

this LAYER provides significant structural support and is comprised mainly of dense irregular connective tissue