Carbon Dioxide

Carbon dioxide (CO2) is a simple, carbon-containing inorganic compound. It is produced as a waste product when energy is released during certain metabolic processes. As it moves from cells into surrounding body fluids and blood, most of the carbon dioxide reacts with water to form a weak acid (carbonic acid, H2CO3). This acid ionizes, releasing hydrogen ions (H+) and bicarbonate ions (HCO3-), which blood carries to the respiratory organs. There, the chemical reactions reverse, and carbon dioxide gas is produced, eventually to be exhaled.

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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