Operation Ouch Zombie Apocalypse CBBC

Find out what really happens to you when you get bitten by Zombie. Dr Chris and Dr Xand Van Tulleken from Operation Ouch explain the science behind .\r
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Dr Chris gets an ultrasound on his bladder to show what happens when you have a wee! Watch this clip from Operation Ouch! Watch more great Operation .\r
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Chris and Xand go back in time to find out how to fix a broken bone in a World War 1 trench. Watch the full episode on Friday August 8th on CBBC and CBBCHD .