### Clue: Organ, speculated vicar, needs looking over – it's our nerve centre? (9)
### Answer: VERTEBRAE 
 ### Explanation: Definition: it's our nerve centre
 **Reversal of**(needs looking over) [ EAR(your hearing organ) + BET(speculated;gambled) + REV(abbrev. for "reverend";a vicar's title) ].
Answer: The bones that protect the spinal cord, the bundle of nerve tissue and from which the spinal nerves branch to various parts of the body.