Gland is a group of cell that secretes chemical substances i.e hormone and juices to control and regulate different metabolic activities of the body. It is of three types:
- exocrine gland
- endocrine gland
- mixed gland
A gland is an organ which produces and releases substances that perform a specific function in the body. There are two types of gland. Endocrine glands are ductless glands and release the substances that they make (hormones) directly into the bloodstream.