EPITHELIUM CONNECTIVE TISSUE SKIN
INTEGUMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What determines fingerprints?
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the epidermis
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the dermis
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the subcutaneous layer
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the boundary between the epidermis and dermis
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the boundary between the dermis and subcutaneous layer
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Explanation:
Detailed explanation-1: -The dermal papillae is a boundary of cells separating the outer portion of the skin (epidermis) and the inner skin (dermis). The shape of the dermal papillae determines the form and pattern of the ridges on the surface of the skin.
Detailed explanation-2: -These fingerprints start forming in the 10th week after conception when some cells in the middle layer of the skin, called the basal layer, start growing faster than the cells in the inner layer of dermis or outer layer of epidermis. The extra cells cause the skin to buckle and fold into ridges.
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