Dermis


Dermis
Dermis
Latin dermis; corium
Code TH H3.12.00.1.03001
A graphic representation of the interface between skin epithelium and the underlying connective tissue. Zone B, indicating the region of overlapping projections of epithelium and connective tissue, is the papillary dermis. Zone C, indicating the region of dermis that lies immediately subjacent to the interdigitations of epithelium, is the reticular dermis.

The dermis is a layer of skin between the epidermis (with which it makes up the cutis) and subcutaneous tissues, and is composed of two layers, the papillary and reticular dermis.[1] Structural components of the dermis are collagen, elastic fibers, and extrafibrillar matrix (previously called ground substance).[2]

Contents

Components of the Dermis

The dermis is composed of three major types of cells[3]: 1. Fibroblasts 2. Macrophages 3. Adipocytes

Apart from these cells, the dermis is also composed of matrix components such as collagen (which provides strength), elastin (which provides elasticity), and glycosaminoglycans[3].

Stratum papillare

The stratum papillare sends conical elevations (papillae) into the epidermis which contain either terminal networks of blood capillaries or tactile Meissner's corpuscles. [4]

Stratum reticulare

The stratum reticulare possesses coarser and more regularly arranged collagenous fiber bundles.

Additional images

See also

References

  1. ^ James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. Pages 1, 11–12. ISBN 0-7216-2921-0.
  2. ^ Marks, James G; Miller, Jeffery (2006). Lookingbill and Marks' Principles of Dermatology (4th ed.). Elsevier Inc. Page 8–9. ISBN 1-4160-3185-5.
  3. ^ a b The Ageing Skin - Structure
  4. ^ http://microvet.arizona.edu/Courses/vsc422/secure/VSC422AppledHistologyLabHandout.pdf

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Look at other dictionaries:

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  • 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