Respiratory system | interactive anatomy guide, The human respiratory system – explore anatomy of the upper and lower respiratory tracts, from nasal passages to the lungs, using interactive diagrams.. Human respiratory system lungs; work, Webmd explains how your lungs and respiratory system work by taking in air, removing oxygen and breathing out carbon dioxide.. How respiratory system birds works - pet health care, The avian respiratory system differs from that of mammals. birds have lungs, air sacs, a syrinx, and their respiration requires two cycles to move a volume of air..

Respiratory system: facts, function diseases, The human respiratory system consists lungs organs. main function oxygen carbon dioxide.. https://www.livescience.com/22616-respiratory-system.html Respiratory system insects - wikipedia, An insect' respiratory system biological system introduces respiratory gases interior performs gas exchange. air enters . https://en.wikipedia.org/wiki/Respiratory_system_of_insects The respiratory system - youtube, Go human body -hand respiratory system works. vivid animation real-life examples demonstrate respiration process. http://www.youtube.com/watch?v=hc1YtXc_84A