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.
BBC's Peter Hobday: He died almost instantly - broadcast 9.12.80. John Lennon was shot four times in the back by Mark Chapman who had asked the former Beatle for his autograph only hours before he laid in wait and killed him. Chapman pleaded guilty to gunning down Mr Lennon and is currently serving life in Attica prison near New York.