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  2. Dermis - Wikipedia

    en.wikipedia.org/wiki/Dermis

    The dermal papillae are part of the uppermost layer of the dermis, the papillary dermis, and the ridges they form greatly increase the surface area between the dermis and epidermis. Because the main function of the dermis is to support the epidermis, this greatly increases the exchange of oxygen, nutrients, and waste products between these two ...

  3. Hair follicle - Wikipedia

    en.wikipedia.org/wiki/Hair_follicle

    The papilla is a large structure at the base of the hair follicle. [4] The papilla is made up mainly of connective tissue and a capillary loop. Cell division in the papilla is either rare or non-existent. [contradictory] Around the papilla is the hair matrix. A root sheath composed of an external and internal root sheath.

  4. Interdigitation - Wikipedia

    en.wikipedia.org/wiki/Interdigitation

    In the dermis, dermal papillae (DP) (singular papilla, diminutive of Latin papula, 'pimple') are small, nipple-like extensions of the dermis into the epidermis, also known as interdigitations. The distal convoluted tubule (DCT), a portion of kidney nephron , can be recognized by several distinct features, including lateral membrane ...

  5. Can Microneedling Actually Prevent Hair Loss? - AOL

    www.aol.com/microneedling-actually-prevent-hair...

    The purpose of microneedling for hair loss is to stimulate growth factors in the dermal papilla, or the stem cells in your hair follicles. This encouraged them to activate and start growing more hair.

  6. Integumentary system - Wikipedia

    en.wikipedia.org/wiki/Integumentary_system

    The dermis has two layers: the papillary dermis and the reticular layer. The papillary layer is the superficial layer that forms finger-like projections into the epidermis (dermal papillae), [5] and consists of highly vascularized, loose connective tissue. The reticular layer is the deep layer of the dermis and consists of the dense irregular ...

  7. Hair cloning - Wikipedia

    en.wikipedia.org/wiki/Hair_cloning

    The basic idea of hair cloning is that healthy follicle cells or dermal papillae can be extracted from the subject from areas that are not bald and are not suffering hair loss. They can be multiplied (cloned) by various culturing methods [ 1 ] and the new cells can be injected back into the bald scalp, where they would produce healthy hair.

  8. Histopathologic diagnosis of dermatitis - Wikipedia

    en.wikipedia.org/wiki/Histopathologic_diagnosis...

    The dermal papillae between the elongated rete ridges are frequently dome shaped. Necrotic keratinocytes can be observed in the basal layer of the epidermis and at the dermal-epidermal junction. Eosinophilic remnants of anucleate apoptotic basal cells may also be found in the dermis and are referred to as “colloid or civatte bodies”.

  9. Papilla - Wikipedia

    en.wikipedia.org/wiki/Papilla

    Papilla (fish anatomy), in the mouth of fish; Basilar papilla, a sensory organ of lizards, amphibians and fish; Dental papilla, in a developing tooth; Dermal papillae, part of the skin structure; Major duodenal papilla, in the duodenum; Minor duodenal papilla, in the duodenum; Genital papilla, a feature of the external genitalia of some animals