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1. What is the primary function of the stratum corneum in the integumentary system? A) To provide insulation B) To prevent water loss C) To produce vitamin D D) To sense pain Answer: B) To prevent water loss Rationale: The stratum corneum is the outermost layer of the skin, which acts as a barrier to prevent transepidermal water loss. 2. Which of the following is a common sign of a venous skin ulcer? A) Sharp, well-defined edges B) Located on the lateral ankle C) Heavy exudate D) Painful to the touch Answer: C) Heavy exudate Rationale: Venous u
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