Dermal papillae

（重定向自Friction ridge）

In the human skin, the dermal papillae (DP) (singular papilla, diminutive of Latin papula, 'pimple') are small, nipple-like extensions (or interdigitations) of the dermis into the epidermis. At the surface of the skin in hands and feet, they appear as epidermal or papillary ridges (colloquially known as fingerprints).

单词	Friction ridge
释义	Friction ridge 原声例句科学大揭秘 This peculiar property of friction ridge impression, commonly known as fingerprints, has been a part of crime-solving for over 100 years. 这种摩擦脊印的特殊特性，通常被称为指纹，100 多年来一直是破案的一部分。英语百科 Dermal papillae （重定向自Friction ridge） In the human skin, the dermal papillae (DP) (singular papilla, diminutive of Latin papula, 'pimple') are small, nipple-like extensions (or interdigitations) of the dermis into the epidermis. At the surface of the skin in hands and feet, they appear as epidermal or papillary ridges (colloquially known as fingerprints).
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