ANP 1106 Lecture Notes - Lecture 2: Stratum Corneum, Stratum Lucidum, Stratified Squamous Epithelium
15 Mar 2016
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2. 1 layers of the epidermis and cells that compose them 2. Skin color (cid:198) three pigments contributing to skin colour: 5. 2. 3 accessory structures of the skin 5: hairs and hair follicles 5. Hair thinning and baldness: 7: nails 7. 2. 4 major functions of the skin 9. 2. 1 layers of the e pidermis and cells t hat compose them. Stratified squamous squamous on surface, deep layers have cuboidal because they need to replicate and carry out other functions. Epidermal cells (4 t ypes): keratinocytes: (yellow on diagram), most epidermal cells are this (cid:120) (cid:120) (cid:120) (cid:120) (cid:120) Surface keratinocytes are dead, and millions rub off every day from our skin, our epidermis is recycled every 25-45 days, keratin formation accelerated in body areas regularly subject to friction= callus. Like macrophages (cid:198) activate immune system: tactile cells: (merkel cells) Anp 1106 (cid:120) at epidermis/dermis boundary; have a disc-like sensory nerve ending - touch receptors.
