Multiple ChoiceWould you expect to find more keratin in keratinocytes closer to the external surface of the skin (more superficial) or further from the external surface of the skin (deeper)?2923Has a video solution.
Multiple ChoiceWhich type of cells play the most important role in preventing skin cancer?2634Has a video solution.
Multiple ChoiceImagine you're a doctor, and a patient comes to you with a rare medical condition. It seems that their epidermal cells are not producing keratin. Which of the following symptoms are they most likely to experience?2273Has a video solution.
Textbook QuestionThe disease pemphigus vulgaris involves a patient's own immune system attacking the desmosomes between the epithelial cells of the skin. What changes would you expect to see with this disease?23Has a video solution.
Textbook QuestionKeratinocytes in the superficial strata of the epidermis die because:a. they are too far away from the blood supply in the dermis.b. they are surrounded by a lipid-based substance that makes them more permeable to water.c. They do not die.d. No keratinocytes in the epidermis are alive.23Has a video solution.
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.a. Melanocytes account for the bulk of the epidermis.18Has a video solution.
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.c. Dendritic cells are phagocytes of the immune system that protect the skin and deeper tissues from invasion by pathogens.23Has a video solution.
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.d. Merkel cells produce the pigment melanin.22Has a video solution.
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.a. The primary skin pigment is melanin, which is derived from the amino acid tyrosine.c20Has a video solution.
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.b. Melanin is produced by melanocytes and covers the nuclei of neighboring dendritic cells.22Has a video solution.
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.c. Carotene is a brown-black pigment that accumulates in the stratum corneum.25Has a video solution.
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.e. The pigment hemoglobin in red blood cells gives skin a pinkish hue when it binds high amounts of oxygen.16Has a video solution.
Textbook QuestionWhich cell functions as part of the immune system? a. keratinocyte, b. melanocyte, c. dendritic cell, d. tactile epithelial cell.102Has a video solution.
Textbook QuestionThe rule of nines is helpful clinically in a. diagnosing skin cancer, b. estimating the extent of a burn, c. estimating how serious a cancer is, d. preventing acne.101Has a video solution.
Textbook QuestionWhy are there no skin cancers that originate from stratum corneum cells?177Has a video solution.
