Final answer:
The glandular system formula is used to describe the properties and uses of the glandular system in biology. The glandular system consists of both endocrine and exocrine glands. Endocrine glands release hormones directly into the bloodstream.
Step-by-step explanation:
Glandular Epithelium
A gland is a structure made up of one or more cells modified to synthesize and secrete chemical substances. Most glands consist of groups of epithelial cells. A gland can be classified as an endocrine gland, a ductless gland that releases secretions directly into surrounding tissues and fluids (endo- = "inside"), or an exocrine gland whose secretions leave through a duct that opens directly, or indirectly, to the external environment (exo- = "outside").
Endocrine glands are a part of the glandular system that release hormones directly into the bloodstream. They play a crucial role in regulating various bodily functions. For example, the thyroid gland is an endocrine gland that produces hormones that control metabolism.