If there's nothing obviously physically wrong with him, what's the problem in assuming he's fine until proven otherwise? Later on, bruises will have formed from his fall, but those are nothing when compared to the fact a normal person likely would've died if they'd fallen from the same height.

Rhetorical or not, he answers, “By other gods, for certain, although I've never fallen before and don't know the consequences that come with it.” Maybe he's vulnerable now? It wouldn't be all that surprising, to be fair, though he'll hope he's wrong.