Melanocytes are not true epithelial cells, they actually arise from cells of neu

Question

Melanocytes are not true epithelial cells, they actually arise from cells of neural origin. (You may need to look this up!)

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Question 21 pts

Which two layers of skin are alive?

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Question 31 pts

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Following a bad cut in the skin, a scar often forms. Upon microscopic examination, you find that the scar is composed of extracellular proteins secreted by fibrocytes located in the dermis. Where would you expect these proteins to be synthesized?

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Question 41 pts

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Tumors that originate from cells of mesenchymal origin are called sarcomas. Which of the following cell types could potentially generate a sarcoma?

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Question 51 pts

What is unique about exocrine glands?

Explanation / Answer

True .melanocytes are not true epithelial cells. They actually arise from cells of neural origin.

Q21pts- Stratum basale layer of skin is alive because it is the innermost layer of epidermal cells .it also contain cells like melanocytes and keratinocytes.

2. Startum spinosum layer is alive which is located beneath the stratum granulosum. Cells of this layer are mostly living.

Q31pts- protein that are used in cell or secretion are synthesized in ribosomes organelle. Which is used to provide strength and hold body.

q41pts- Oesteocytes produce soluble factor that produce that contribute to cancer

Q51 PTS- exocrine glands are ducted glands .they secrete substances by way of duct onto epithelial surface.

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