《skinspleen皮膚脾》ppt課件-文庫吧
2024-12-21 03:30 本頁面
【正文】 ophages Populated by B lymphocytes Function of Spleen ?Filter the blood (aged and damaged erythrocytes) ?Immune surveillance ?Store blood ? Hematopoietic function Integumentary System Donghua Liu Department of Histology amp。 Embryology, Harbin Medical University General description Structure： Skin: Epidermis Dermis Hypodermis Appendages: Hair, nails, sebaceous gland， sweat gland. Function: (1) Protection (2) Sensitive an (3) Regulation I. Structure of epidermis A. Keratinized cells (5 layers) B. Nonkeratinized cells (Melanocyte,Langerhans cell,Merkel’s cell) II. Structure of dermis and hypodermis III. Structure of hair, sebaceous gland, and sweat gland. Structure: 1. Keratinized cells（角質形成細胞） I Epidermis（表皮） 1. Stratum Basale （基底層） : LM: one layer, rest on . , basophilic, columnar or cuboidal. EM: keratin filaments, (.), desmosome amp。 hemidesmosome. 2. Stratum Spinosum（棘層） : LM: 510 layers, cuboidal EM: bundled . lamellar granules LM: 35 layers, polygonal. EM: Keratohyalin granules (no membrane) lamellar granules. 3. Stratum Granulosum（顆粒層） : 4. Stratum Lucidum（透明層） : LM: Eosinophilic, transparent. EM: Matrix of keratohyalin granules+ embedded bundled . = keratin. 5. Str
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