Definitions for respiratory system

This page provides all possible meanings and translations of the word respiratory system

Random House Webster's College Dictionary

res′piratory sys`tem(n.)

  1. the system of organs and tissues involved in drawing oxygen into the body and removing carbon dioxide: in mammals, includes the nasal cavity, pharynx, trachea, bronchi, lungs, and the diaphragm.

    Category: Anatomy

Origin of respiratory system:

1935–40

Princeton's WordNet

  1. respiratory system, systema respiratorium(noun)

    the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing

Wiktionary

  1. respiratory system(Noun)

    The system of organs serving for respiration.

Freebase

  1. Respiratory system

    The respiratory system is the biological system that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood. This exchange process occurs in the alveolar region of the lungs. Other animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange. Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals. The respiratory system in plants also includes anatomical features such as holes on the undersides of leaves known as stomata.

U.S. National Library of Medicine

  1. Respiratory System

    The tubular and cavernous organs and structures, by means of which pulmonary ventilation and gas exchange between ambient air and the blood are brought about.

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