Glandular epithelium is a type of epithelial tissue that is specialized for secretion. It is composed of cells that can produce and release various substances, such as hormones, enzymes, and mucus. This tissue is found in glands, which can be classified as either endocrine or exocrine. Endocrine glands release their products directly into the bloodstream, while exocrine glands secrete substances through ducts to the surface of organs or tissues. The structure of glandular epithelium varies depending on its function. In endocrine glands, the cells are often arranged in clusters or cords, allowing for efficient hormone release. In exocrine glands, the cells may form tubular or acinar structures, facilitating the transport of secretions. Overall, glandular epithelium plays a crucial role in maintaining bodily functions through its secretory activities.