Cardiovascular System Reproductive System

Hormones are carried in the bloodstream; some have direct actions on the heart and blood vessels.

Hormones are carried in the bloodstream; some have direct actions on the heart and blood vessels.

Sex hormones play a major role in development of secondary sex characteristics, egg, and sperm.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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