a group of cells in the body that produces a substance which is then released

A collection of cells specialized to secrete materials unrelated to their ordinary needs. For instance, the salivary gland is a collection of cells that secrete saliva. Those cells have no use for the product, which aids digestion in the mouth and stomach.

organs that produce different substances and release them into the body as required.

Cells in the skin that perform a certain function. For example, sweat glands produce sweat or perspiration, which help to cool the body.

Glands are groups of cells that make substances enabling body functions. "Glands" generally refer to secreting glands and lymph nodes. Secreting glands manufacture and release chemical substances such as hormones and enzymes. Lymph nodes play an important part in fighting infections.

Special groups of cells that do a certain job. The pituitary gland, for example, makes hormones that affect growth.

A cell or group of cells which have the ability to manufacture a secretion that is discharged and used in some other part of the body.

Special parts in our bodies that make hormones. These hormones act like chemical messengers taking messages from one part of our body to another. The pituitary (pi-TOO-i-tair-ee) gland sends growth hormone to the bones. This makes us grow. There are many other types of glands and other types of hormones in our bodies too.

organs that secrete hormones, or other substances that activate or inhibit body functions or that eliminate substances from the body.

a cell or group of cells that produce and release substances used nearby or in another part of the body.