Author: Mrs. Neelam Singh
Volume: 01
First Online: 31 August 2024
Pages: 87-97
DOI:

Tissues are groups of cells that work together to perform specific functions within an organism, representing a higher level of organization beyond individual cells. The study of tissues, known as histology, reveals the complex structures and functions that support life. Tissues are broadly classified into four main types: epithelial, connective, muscle, and nervous tissues. Epithelial tissues are one of the primary types and serve as protective layers that cover body surfaces and line cavities. These tissues are further classified based on the number of cell layers (simple or stratified) and the shape of the cells (squamous, cuboidal, or columnar). The structure of epithelial tissues is closely related to their functions, such as protection, absorption, secretion, and filtration. Epithelial tissues are found in various locations, including the skin, lining of the digestive tract, and the glands, each location tailored to specific functional needs. Understanding the organization and classification of epithelial tissues is fundamental to comprehending how the body maintains its integrity and function at the tissue level.