INTEGUMENTERY SYSTEM
EPIDERMIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the epidermis has no sensory cells.
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the epidermis has no immune cells.
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the epidermis has no blood vessels.
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the epidermis has no dead cells.
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Detailed explanation-1: -The epidermis is composed of keratinized, stratified squamous epithelium. It is made of four or five layers of epithelial cells, depending on its location in the body. It does not have any blood vessels within it (i.e., it is avascular).
Detailed explanation-2: -The epidermis is avascular – it has no blood vessels directly in the layer. Veins and arteries are found just deep to the epidermis. Nutrients and oxygen diffuse into this layer from the bloodstream.
Detailed explanation-3: -The Epidermis (thin outer layer of skin) The Epidermis does not contain blood vessels (non-vascular). It contains the pigment melanin which gives skin colour and allows the skin to tan, uneven distribution of melanin causes ‘freckles’. The protein keratin stiffens epidermal tissue to form finger nails.