The gland can be defined as the group of cells in an animal's body which synthesizes hormones and releases its secretion directly into the bloodstream or inside the cavities or directly on the outer surface of the body.
The gland that secrete the secretions directly on the skin or outer surface is known as exocrine gland.
The secretions can be from sweat from sweat glands, goblet cells, salivary gland and tear gland are some of the example of exocrine gland.
The exocrine gland secretes through ducts opening in a gland to the surface of an organ or tissue or into a vessel of the body. Sweat glands (secreting sweat) and salivary glands (secreting saliva) are the best-known examples of exocrine glands. These both gland acting on local tissue which is present near to the duct opening.
In structure, exocrine glands are classified by their different shape of secretory parts, and the arrangement of their ducts. These are unicellular, multicellular and goblet cells in nature.
