UNIT QUIZ: Critical Thinking and Application Questions 6 1 Explain why a superfi
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Question
UNIT QUIZ: Critical Thinking and Application Questions 6 1 Explain why a superficial skin scrape (sach as a paper cut) doesn't bleed. Why don't you T bleed. Why don't you bleed when a hair is pualled out Shampoos and hair conditioners often healthy. Taking into claim to have nutrients and vitamins that your hair must have to grow and be account the composition of hair, do you think these vitamins and nutrients will Why or why not? 3 Many drugs can be applied to the skin without entering the blood. How is this fact explained by the structure of the skin? Integumentary SystemUnit 6
Explanation / Answer
1. Explain why a superficial skin scrape (such as a paper cut) doesn’t bleed. Why don’t you bleed when a hair is pulled out?
Answer: Both injuries involve the epidermis, which is avascular made up of dead cells deposited with keratin protein.
2. Shampoos and hair conditioners often claim to have nutrients and vitamins that your hair must have to grow and be healthy. Taking into account the composition of hair, do you think these vitamins and nutrients will be beneficial? Why or why not?
Answer: Dead cells never absorb nutrient and don't metabolize the nutrients. Hair consists of dead cells, and dead cells don’t grow, need nutrients, or need vitamins.
3.
Answer:
The stratum corneum, dense made up of dead skin cells and various waxy substances performs like a wall of defense from external moisture, chemicals, UV radiation and is the leading protector contrary to any substance applied on the skin thus when these dead skin parts fall off and exfoliated from the body the lower parts of skin replace the surface with extra keratin thus preventing any kind of penetration.
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