If I am eating cooked chicken, and then I gnaw on the soft ends of some of
the bones, will my body be getting some useful calcium from this?

I know it's possible to extract the calcium from bones by making bone
broths, but I was wondering about getting it in a more direct fashion when
that's convenient.

Then there are the structures that are tougher than flesh, but softer than
bone (I'm not sure what they're called). Do these also contain calcium in
any significant amount that could be utilised by chewing them up?

Thanks,
Barbara