dermis

/derr"mis/, n.
Anat., Zool. the dense inner layer of skin beneath the epidermis, composed of connective tissue, blood and lymph vessels, sweat glands, hair follicles, and an elaborate sensory nerve network. Also called corium.
[1820-30; < NL; abstracted from EPIDERMIS]

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also called  corium,  

      the thicker, deeper layer of the skin underlying the epidermis and made up of connective tissue. It is present in varying degrees of development among various vertebrate groups, being relatively thin and simple in aquatic animals and progressively thicker and more complex in terrestrial species.

      The dermis from its earliest evolutionary appearance has been a depository of bone, as expressed in dermal armour (primitive fishes), scales (fishes and certain amphibians), and plates (crocodile, lizard, turtle, armadillo). The fin rays of fishes are dermal derivatives, as are many types of pigment cells. The dermis of mammals is of greater thickness relative to the epidermis than is that of other vertebrates, partly because it contains abundant collagenous connective tissue. When treated with tannic acid, the dermis becomes leather.

 In humans the dermis projects into the overlying epidermis in ridges called papillae (see video). Nerves that extend through the dermis and end in the papillae are sensitive to heat, cold, pain, and pressure. Sweat glands and oil glands lie in the deeper stratum reticulare, as do the bases of hair follicles, the nail beds, and blood and lymph vessels.
 

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Universalium. 2010.

Look at other dictionaries:

  • Dermis — Saltar a navegación, búsqueda La piel y sus capas La dermis es la capa de piel situada bajo la epidermis y firmemente conectado a ella. Función Desempeña una función protectora, representa la segunda línea de defensa contra los traumatismos (su… …   Wikipedia Español

  • dermis — f. histol. Capa profunda de la piel formada por tejido conjuntivo fibroso; está constituida en su parte superior por melanocitos, capilares y terminaciones nerviosas; en la capa media dominan las fibras elásticas; y en la dermis profunda se… …   Diccionario médico

  • dermis — ‘Capa de la piel’. Es femenino: la dermis …   Diccionario panhispánico de dudas

  • dermis — (plural dermis) sustantivo femenino 1. Área: anatomía Capa intermedia y más gruesa de la piel …   Diccionario Salamanca de la Lengua Española

  • Dermis — Der mis, n. [NL. See {Derm}.] (Anat.) The deep sensitive layer of the skin beneath the scarfskin or epidermis; called also {true skin}, {derm}, {derma}, {corium}, {cutis}, and {enderon}. See {Skin}, and Illust. in Appendix. [1913 Webster] || …   The Collaborative International Dictionary of English

  • Dermis — ⇒ Corium …   Deutsch wörterbuch der biologie

  • dermis — 1830, perhaps from Latinized form of Gk. derma skin (see DERMA (Cf. derma)); or perhaps a back formation from epidermis …   Etymology dictionary

  • dermis — (De epidermis). f. Capa conjuntiva que forma parte de la piel de los vertebrados, más gruesa que la epidermis y situada debajo de esta …   Diccionario de la lengua española

  • dermis — ► NOUN Anatomy ▪ the thick layer of the skin below the epidermis, consisting of living tissue. DERIVATIVES dermal adjective. ORIGIN Latin, suggested by epidermis …   English terms dictionary

  • dermis — [dʉr′mis] n. [ModL, back form. < LL epidermis, EPIDERMIS] the layer of skin just below the epidermis: see SKIN …   English World dictionary

  • Dermis — This article is about the layer of skin. For the website, see DermIS (Dermatology Information System). Dermis Latin dermis; corium Code TH H3.12.00.1.03001 …   Wikipedia

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