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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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Systematics: Evolutionary Classification of Organisms

Human Body Systems

Levels of Organization in the Body

Tissues in the Human Body

Human Organ Systems

Human Skeletal System

Human Skeleton Diagram

Compact Bone Tissue

Human Muscular System

Human Muscular System Diagram

Three Types of Human Muscle Tissue

Skeletal Muscle Contraction

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