EXCRETORY SYSTEM
EXCRETORY SYSTEM ALL QUESTIONS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Your innermost layer of skin
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Your outermost layer of skin
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The border between the epidermis and the dermis
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The border between the dermis and the hypodermis
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Detailed explanation-1: -The stratum corneum is the outermost layer of the epidermis, and is made up of 10 to 30 thin layers of continually shedding, dead keratinocytes.
Detailed explanation-2: -Dead skin cells: the facts They are formed at the base of the epidermis, and gradually move up through the skin until they reach the outer surface, where they die, forming what is known as the “stratum corneum”-around 15-20 layers of dead cells.
Detailed explanation-3: -The epidermis is the thin outer layer of the skin. It consists of 2 primary types of cells: Keratinocytes. Keratinocytes comprise about 90% of the epidermis and are responsible for its structure and barrier functions.
Detailed explanation-4: -The stratum corneum is the most superficial layer of the epidermis and is the layer exposed to the outside environment (see Figure 4). The increased keratinization (also called cornification) of the cells in this layer gives it its name. There are usually 15 to 30 layers of cells in the stratum corneum.
Detailed explanation-5: -A type of protein found on epithelial cells, which line the inside and outside surfaces of the body. Keratins help form the tissues of the hair, nails, and the outer layer of the skin. They are also found on cells in the lining of organs, glands, and other parts of the body.