Human Biology: Concepts and Current Issues (8th Edition)
Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 13, Problem 8TY
Summary Introduction

Introduction:

Hormone refers to any chemical messenger, which performs vital functions and is required in low quantities. The activity of both the male and the female reproductive system is controlled by hormones.

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