From Conservapedia - Reading time: 1 min
A gland is a group of cells that prepare and release a chemical for use by the body.[1] There are two broad classifications of glands:
- Endocrine glands secrete their chemicals directly into the blood stream.
- Exocrine glands secrete through a duct.
References[edit]
- ↑ Wile, Dr. Jay L. Exploring Creation With General Science. Anderson: Apologia Educational Ministries, Inc. 2000