Overview: The doctors reveal how your eardrum works to enable you to hear, and they find out how tough it is to be hospital radio hosts in Operation Takeover. Dr Chris discovers what it takes for anaesthetists to keep you safe and pain-free during operations, and Ouch & About On Call hit the wards to answer patients' medical questions. Meanwhile, in accident and emergency, one patient comes in with a cut to his hand and another is treated for a football injury.