Chapter 17.3, Problem 8LO

Summary Introduction

To describe: The general structure, formation, and functions of local hormones.

Concept introduction: Endocrine system is the chemical signaling system that uses blood vessels as information channels. The endocrine glands are ductless organs located within organ systems and contain groups of endocrine cells that secrete their hormones directly into their surroundings. This system interacts with other body cells through these hormones. There are different types of hormones and vary in their structure, action, and response.