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Friday, December 14, 2012

Explain the basal layer in human skin

Explain the basal layer in human skin


Basal layer is Stratum germinativum = stratum basale = basal cell layerA single layer of cells long settle on the basilar membrane basement membrane. About a quarter of the cells are of melanocytes colored cells which contain melanin pigment and produced, and this is the skin and hair dye. There Albinism, a condition recessive genetic recipe where cells are unable to produce melanin. Be infected is very light in color and iris eyes also lacks character, and may be blue in color. And heaping sensitive to light and sun.
Stratum spinosum a second layer in the layers of skin cells: This layer is composed of layers of skin cells cubic. Cells related to each other by contact areas between each cell and the other called desmosomes, thus becoming the form of cells, such as spinal If you take her and that characterized and the class known as forklifts. Whenever I went up to the top the more staining nuclei of cells called this status pyknosis, the first sign of cell death appeared. The reason is that food and water up this way cells spread from the bottom layer of the more new cells formed pushed above to top the cells that decreases over water and food Vtstaml store.Cells in this layer are made fiber keratin intermediate filaments called keratin which pulls cells together and help cells survive intact.

Stratum granulosum: This class exists in the thick skin, for example, palm of the hand, but be gentle if the skin is thin. Questioned Squamous cells are squamous in a layer into 3 layers, and the granules Tansbg dye basal basophilic granules which keratohyalin granules which are not related to the membrane. There granules stick to the cell membrane and contain fatty granules, which prevents water from entering from the outside to the inside of the body. But also prevent food from reaching the cells and cells that die in the class that are above this layer.

Stratum lucidum: meaning in Latin transparent layer. A thin layer of dead cells and look transparent under Almkrscop. Contain transparent material name eleidin and that turns into keratin. This layer present in the skin of the palm of the hand and foot skin comfort only. They contain a fatty substance that prevents water from entering the skin.

Stratum corneum: class cornea (the "horny layer") which is the outer layer of the skin, which is composed of layers of dead cells that do not have nuclei. Whenever fell dead cells whenever defined inside other cells manufactured by the basal layer. These cells contain keratin, a protein prevents the evaporation of water from the skin helps to keep the skin moist. The cells can also absorb water leaving the skin moist. Hence we see the skin Ickramh on toes and hand while remaining for a long time in the water. This layer is thicker in places that are exposed for use and damage such as hand and foot. In general there are 15-20 layer of cells in this layer.

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