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Overview of the Respiratory System

Overview of the Respiratory System

Bronchial tubes and their branches can be seen in this normal chest x-ray.
© Thomas Hecker.

The respiratory system, composed of lungs, airways, respiratory muscles and blood vessels, serves as the mechanism that brings oxygen into the body and release CO2 out of the body.




Author(s): Nancy Moreno, PhD, Deanne Erdmann, MS, and Sonia Rahmati Clayton, PhD
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Human Genetic Molecular "Clock"

Complex Animals Sleep and Need Sleep to Survive

Sleep Performance Laboratory


Common Treatable STDs


What is a Cell?

Genetic Flexibility

Adult Stem Cells

Embryonic Stem Cells Can Become Any Tissue In The Body

Structures and Functions of Genomes

The Chromosome

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