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Q. Is the epithelium vascularized? How do oxygen and nutrients reach the epithelium? Why is this feature an important evolutionary acquisition?
Epithelia are not vascularized capillaries don't directly reach their cells the epithelium exchanges substances by diffusion with the connective tissue situated under it.
Since the epithelia are not vascularized minuscule scratches or skin injuries that happen all the time do not trigger bleeding and do not expose the blood to contamination from external agents this is an important protective strategy discovered by evolution.
Bone grafting issues Planning of the case is very critical. Any bone defect in the aesthetic zone should be evaluated prior to implant placement in order to obtain a prosthetic
charachteristicsof phylum canidaria
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What is the proper name for EDTA and what is it? EDTA is ethylenediamine tetraacetic acid. It is a tough chelating agent. It has many uses containing: 1) Industrial cleaning
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