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Integrated Billing And Coding Practice Test

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Which is the outermost layer of the skin?
Correct Answer:
Epidermis
Explanation:
The outermost layer of the skin is the epidermis. It sits above the dermis and forms the protective surface that interfaces with the environment. Within the epidermis, the very outer portion is the stratum corneum, a layer of flattened dead cells that provides a durable, waterproof barrier. The dermis lies beneath the epidermis and contains structures like blood vessels, nerves, and glands. The hypodermis is the deepest layer, mainly fat and connective tissue that anchors the skin to underlying tissues. So while the stratum corneum is part of the epidermis, it’s the epidermis as a whole that is the skin’s outermost layer.

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