Bile

Bile is a mixture of salts and phospholipids that aids in the breakdown of fat.[1]

The medieval theory of the four humors lists two kinds of bile (black and yellow). These represented the characteristics of choleric and melancholic personality types.

## References[edit]

1. ↑ Wile, Dr. Jay L. Exploring Creation With Biology. Apologia Educational Ministries, Inc. 1998