SKⅡN
SKIN
skin（largestorgan）wepidermisconstitution:epidermisdermisdermisfunction:protectionsensoryhypodermregulationissynthesis环层小体神经束
constitution: epidermis dermis skin（largest organ） epidermis dermi dermis function: protection sensory regulation synthesis thick skin, thin skin dermi s hypoderm is
dermatoglyphics(fingerprints)basicfingerprintpatternslooparchwhorl
dermatoglyphics (fingerprints)
I.EpidermiscorneumkeratinizedstratifiedHucidumgranulosumsquamousepitheliumspinosumconsistof5layers-basalekeratinocytes+nonkeratinocytes
corneum lucidum granulosum I. Epidermis • keratinized stratified squamous epithelium spinosum basale • consist of 5 layers • keratinocytes + nonkeratinocytes
1.StratumbasaleLM:a singlelayer of basophiliccolumarlcuboidal cellsrestonBMEM:ribosome,keratinfilaments,desmosomeandhemi-Stemcell (mitoticactivity)
1. Stratum basale LM: a single layer of basophilic columar/cuboidal cells, rest on BM EM: ribosome, keratin filaments, desmosome and hemiStem cell (mitotic activity)