Dermis
| Dermis | |
|---|---|
| Latin | dermis; corium |
| Code | TH H3.12.00.1.03001 |
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]
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[edit] 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].
[edit] 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]
[edit] Stratum reticulare
The stratum reticulare possesses coarser and more regularly arranged collagenous fiber bundles.
[edit] Additional images
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Epidermis and dermis of human skin.
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Cross-section of all human skin layers.
[edit] See also
[edit] References
- ^ 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.
- ^ Marks, James G; Miller, Jeffery (2006). Lookingbill and Marks' Principles of Dermatology (4th ed.). Elsevier Inc. Page 8–9. ISBN 1-4160-3185-5.
- ^ a b The Ageing Skin - Structure
- ^ http://microvet.arizona.edu/Courses/vsc422/secure/VSC422AppledHistologyLabHandout.pdf
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