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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): Deanne Erdmann, MS, and Nancy Moreno, PhD
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Avian Influenzas: Ability to Change (part 1)

Hardy-Weinberg Principle

Deviations from the Hardy-Weinberg Equilibrium


Flu: The virus

Systematics: Evolutionary Classification of Organisms

Transmission of Infectious Diseases

Example of an Infectious Disease - Flu

Example of an Infectious Disease - AIDS

Emerging Infectious Diseases

How Are Viruses Studied?

What Organisms and Host Cells Do Viruses Infect?

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