Chapter 26 Part 4 Quiz Laser

Question 1 of 5

1. Question

2 point(s)

According to the video lesson, all of the following are true EXCEPT: Choose the exception

anti-fibrotic factors=anti-inflammatory factors
fetal wound healing=embryonic wound healing
collagenase=matrix metalloproteinase (MMP)
fibronectin=cell produced by fibroblast

Question 2 of 5

2. Question

2 point(s)

The following video describes a daily beverage that lightens skin, replaces collagen and elastin, and inhibits collagenase. Choose ALL the statements that are correct as based on the information presented in the video lesson. Be sure to pause the video prior to submitting the answers to the quiz.

If the “skin cell” mentioned in the video that the active enters is the keratinocyte, then it is not possible to “zap” collagenase inside the cell as collagenase does not reside inside a keratinocyte.
Ingesting hydrolyzed collagen from fish does not replenish the collagen in our skin as there is no mechanism for collagen to exit the digestive tract and somehow migrate to the dermis.
In the video, a claim is made that in 28 days, the skin is visibly smoother. This effect cannot be attributed to ingesting a product targeting collagenase and elastase as these are structural proteins in the dermis and the feeling of smoothness of the skin relates to the relative surface condition and hydration of the stratum corneum.
In the video, a claim is made that the active nanoparticle enters the “skin cell” and targets the mitochondria, which in turn increases the rate of collagen and elastin production. However, the cell nucleus, not the mitochondria controls the rate, type, and amount of proteins made thus enhancing mitochondrial “vitality” does not lead to increased production of any protein.
In the video, a claim is made that in 28 days dark spots are lightened. This is possible as by reducing collagenase and elastase, which both directly target melanin either residing in a keratinocyte or in the dermis.

Question 3 of 5

3. Question

2 point(s)

According to the lesson video, all of the following EXCEPT __________________________ are the primary reasons for wounding mammalian animals in the womb and then observing the wound healing response. Choose the EXCEPTION _________________. Choose the BEST answer.

To determine if different species of mammals heal differently
To understand the differences between how a mammalian embryo responds to wounding versus how an adult mammal responds
To understand the differences between regeneration and repair in mammals
to develop the ability to injure animals and not leave a scar

Question 4 of 5

4. Question

2 point(s)

On the following diagram, the purple arrow is pointing to a length of time designated in red that corresponds most closely to ____________________________. Choose the best answer.

terminal period
transmission period
adjustment period
transition period

Question 5 of 5

5. Question

2 point(s)

Profibrotic and anti-fibrotic factors are _________ that influence the wound environment. Choose ALL that apply.

cytokines
growth factors
proteins
cells
molecules