What is the term for membrane-bound vesicles found in glandular cells that contain the cell's products

The term for membrane-bound vesicles found in glandular cells that contain the cell's products is "granules." These granules are specialized structures that store various substances, such as hormones, enzymes, or other secretory products, before they are released from the cell. For instance, in endocrine glands, granules can hold hormones that are later secreted into the bloodstream, while in exocrine glands, they may store digestive enzymes that are released into ducts. The formation of these granules is essential for the regulated secretion process, allowing cells to package and efficiently release their products in response to specific signals. This mechanism is crucial for maintaining various physiological functions, such as digestion, metabolism, and regulation of bodily processes.