THE STRUCTURE AND FUNCTION OF EPITHELIAL TISSUE IN HUMAN HISTOLOGY

Аннотация

Epithelial tissue represents one of the four basic tissue types in the human body and plays a fundamental role in protection, absorption, secretion, and sensory reception. Characterized by closely packed cells with minimal extracellular matrix, epithelial tissues form continuous layers that cover body surfaces and line internal cavities. This paper explores the structural organization, functional classification, and clinical significance of epithelial tissue, highlighting its cellular polarity, regenerative capacity, and specialization. Understanding epithelial histology is essential for both foundational biological science and clinical applications, particularly inpathology and regenerative medicine. Keywords: Epithelial tissue, simple epithelium, stratified epithelium, basement membrane, histology, cell junctions, glandular epithelium, epithelial regeneration, epithelial-mesenchymal transition,histopathology.