Learn about the respiratory system, the set of organs and tissues involved in gas exchange between animals and the atmosphere. Find out how the respiratory system works, what are its functions, and what are its main parts.

Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide. The major organs of the respiratory system include the nose, pharynx, larynx, trachea, bronchi, lungs, and diaphragm. Learn about the anatomy and function of the respiratory system in this article.

The respiratory system is the organs and other parts of your body involved in breathing, when you exchange oxygen and carbon dioxide. All the cells in your body need oxygen to work.

Learn about the organs, tissues, and muscles that help you breathe and distribute oxygen throughout your body. The respiratory system also filters, warms, and humidifies the air, and plays a role in speech and smell.

The respiratory system, also called the pulmonary system, consists of several organs that function as a whole to oxygenate the body through the process of respiration (breathing).

Learn about the respiratory system, which is responsible for the exchange of oxygen and carbon dioxide in the body. Find out the parts, functions, and common issues that can affect the upper and lower respiratory tracts.

Learn about the respiratory system, its functions, anatomy, and common disorders. The respiratory system exchanges gases, vocalizes, smells, regulates pH, and protects the body from foreign particles and pathogens.

Learn about the structure and functions of the human respiratory system, which facilitates gas exchange, regulates blood pH, and protects the body from harmful substances. Explore the organs, processes, disorders, and maintenance of the respiratory system with diagrams and examples.

Learn about the human respiratory system, a network of organs and tissues that helps us breathe. Find out the structure and function of nose, mouth, pharynx, larynx, trachea, bronchi, lungs and alveoli.