First things first: Do a thorough inspection of the quad, taking a good look at everything.
Just because the part is still on the quad doesn't mean it might not be broken. the only thing I see is a exposed wire from fpv camera and antenna to flight board.
Also gently tug on all the wires to be sure no connections got broken (with the quad unplugged of course)
If by "the antenna" you mean the VTX's then yes, it's possible. Unscrew the connector and look for a broken center pin
on either the TX or it's mating connector (although that wouldn't have anything to do with the quad not arming) if that
antenna doesn't have a good connection it WILL fry your VTX. It's highly unlikely the RX antenna is the problem.
Plugging the quad into your software (Betaflight, Cleanflight, Libre, etc) can also help to troubleshoot what's wrong.