Endocrine system overview

This video tutorial provides an overview of the endocrine system (function, definitions, hormone classification and mechanism of action, target cell specificity, negative feedback).
0:00. Introduction
0:28. Nervous system vs. Endocrine system
2:26. Endocrine glands vs. Exocrine glands
3:29. Definitions
4:08. Chemistry of hormones (peptide/steroid)
6:25. Mechanism of peptide hormones
8:36. Mechanism of steroid hormones
9:57. Hormone target cell specificity
13:26. Target cell activation
15:23. Negative feedback mechanism