Chapter 17.2, Problem 8BYGO

Summary Introduction

Introduction:

Hormones are chemical messengers secreted by glands into the extracellular fluids. The secreted hormones reach the target cells through the bloodstream and they stimulate response of other tissues or cells. Hormones bind only to specific cells based on their corresponding receptors on cells and they act through chemical signals. They regulate growth, development, blood pressure, metabolism, fluid concentration, and maintain homeostasis in the body. Both the positive and negative feedback mechanism may regulate hormone pathways. Positive feedback amplifies the stimulus whereas; negative feedback dampens the stimulus and stops the pathway.