Skin with hair/histological specimen
Layers[edit | edit source]
Epidermis[edit | edit source]
The epidermis consists of stratified squamous epithelium with cornification. It regularly runs into the dermis layer and thus creates epidermal ridges . On the cross-section, we distinguish five layers (layer = stratum ): str. basale , str. spinosum , str. granulosum , str. lucidum and str. corneum (for a more detailed description, see the article Thick-type skin )
Dermis[edit | edit source]
The dermis (Slovak suede, Czech skára) develops from the mesenchyme and consists of ligaments that strengthen the epidermis. In some places, it runs into the epidermis and thus creates dermal papillae . It consists of two layers: with tr. reticulare and pp. papillare. Hair grows from the dermis, sebaceous glands open into the hair follicles .
- Hair follicle
- Thermally expanded into a hair bulb that contains a dermal papilla (nutrition) at the base;
- Layers from the edge to the center of the hair (on a longitudinal section): dermal fibrous sheath, outer and inner root sheath (following the cells of the epidermis ), which join in the bulb region - form the hair matrix, which contains melanocytes, mitotically active and keratinized cells forming the cortex hair;
- For thicker hair, pith.
Hypodermis[edit | edit source]
The hypodermis (subcutaneous tissue) consists of thin tissue, adipocytes, sweat glands (eccrine – simple coiled tubular glands opening onto the surface of the skin, basally they are surrounded by myoepithelial cells)
Links[edit | edit source]
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Literature[edit | edit source]
- MUDR. EIS, Václav – MUDR. JELÍNEK, Štěpán – MUDR. STARLING, Martin. Histopathological atlas [online]. [cit. 15.04.2010]. <http://histologie.lf3.cuni.cz/histologie/atlas/index.htm>.
- JUNQUIERA, L. Carlos – CARNEIRO, José – KELLEY, Robert O.. Basics of histology. 1. edition. Jinočany : H & H 1997, 1997. 502 pp. ISBN 80-85787-37-7.
