The kidneys and bones work together to help regulate blood calcium levels.

Cardiovascular System Reproductive System

Blood transports nutrients to bone cells. Bone helps regulate plasma calcium levels, important to heart function.

The pelvis helps support the uterus during pregnancy. Bone may provide a source of calcium during lactation.

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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