There is a big difference between external and internal respiration. External respiration is basically the transfer of gas between respiratory organs such as lungs and the outer environment. It takes place prior to internal respiration. Internal respiration is the transfer of gas between the blood and cells.
Whatever happened to Julian Lennon? After seven years away from the limelight - a time spent getting his life back together after a disillusioning experience with pop stardom' - the son of a beloved rock icon returns to the public eye and ear with his own record label and a new album, Photograph Smile.
Julian Lennon, centre, with his parents . Julian, 35, is the Sixties child of John Lennon and his first wife, Cynthia; he was abandoned by his father when he was five and only recently received a share of the vast Lennon estate. Sean, 22, is the favoured son, for whom John Lennon became a househusband. He lives with Yoko in the sumptuous Dakota building in New York, where Lennon was shot in 1980, and will inherit the bulk of the Beatle's reputed Â£220 million fortune.