Was ist Stratum Papillare?
Das Stratum papillare ist durch seine zapfenförmigen Ausstülpungen charakterisiert, die Dermis und Epidermis verzahnen. Zwischen Stratum papillare und Stratum basale liegt die Basalmembran der Epidermis. Sie grenzt die beiden Schichten räumlich voneinander ab und verbindet sie.
Was unterscheidet das Stratum Papillare vom Stratum Reticulare?
Die Dermis besteht aus Bindegewebsfasern und gliedert sich in zwei Schichten, die aber nicht scharf gegeneinander abgegrenzt sind, sondern ineinander übergehen: Stratum papillare: die äußere, an die Epidermis angrenzende Schicht. Stratum reticulare: die innere Schicht.
Where is the stratum granulosum located?
The stratum granulosum is the third layer of the epidermis that lies below the stratum corneum and stratum lucidum. The stratum granulosum marks a transition from living skin cells to completely dead skin cells of the outermost layer of the epidermis.
What is the difference between stratum spinosum and stratum granulosum keratinocytes?
Keratinocytes in the stratum granulosum are flatter and more irregular in shape than those in the stratum spinosum, and they have deeply basophilic keratohyalin granules.
What is the difference between stratum Basa´Le and stratum Cor´Neum?
stratum basa´le the deepest layer of the epidermis, composed of a single layer of basophilic cells. Called also basal layer of epidermis. stratum cor´neum the outer horny layer of the epidermis, consisting of cells that are dead and desquamating. Called also horny layer.
What is the main function of keratohyalin granules in the stratum granulosum?
Stratum granulosum. Keratinocytes migrating from the underlying stratum spinosum become known as granular cells in this layer. These cells contain keratohyalin granules, which are filled with histidine- and cysteine-rich proteins that appear to bind the keratin filaments together. Therefore, the main function of keratohyalin granules is…
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