Glandular cells are specialized cells that produce and secrete substances such as hormones, enzymes, or mucus. They are found in various glands throughout the body, including the endocrine glands, which release hormones directly into the bloodstream, and the exocrine glands, which secrete substances through ducts to specific locations. These cells play a crucial role in maintaining bodily functions. For example, pancreatic glandular cells produce digestive enzymes, while thyroid glandular cells secrete hormones that regulate metabolism. The proper functioning of glandular cells is essential for overall health and homeostasis.