Blood & Blood Development

Question 13 - Single Best Answer

Mr. Itchy presents to your office because of a rash. He had been on a camping trip last week. On examination, he has blisters, scabs, and lichenified areas(a change in the skin texture secondary to irritation like scratching). You diagnose him with contact dermatitis(inflammation of the skin) because of exposure to poison ivy. He also has pustules(small raised lesions in the skin containing pus). Here are some photos of the initial blisters you would see. You suspect he is also infected with Staphylococcus aureus, organisms/bacteria normally found on the skin which can infect any open skin wound and cause pus. Which cell would you expect to see at the inflammatory site first?

D) epithelial cell

Sorry...
These and endothelial cells would be among the last to appear. Here is a photo of the topmost layer of thick skin.

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