Jackson was hurt just before half-time in the 1-1 draw and, following a stoppage of more than 10 minutes, had to be carried off on a stretcher.
Toral was able to walk off unaided but suffered a jaw injury which saw him substituted. Jackson was unconscious when he was carried off but later recovered from the collision.
Following the game, Morais said: ‘I am happy to hear that he is ok, I saw him for some minutes. He was already eating pizza and he is ok. He got conscious and he is ok.’
Morais admitted that having to take Jackson off left his defensive unit compromised as they missed his organisation at the back.
He added: ‘We did a very good first half and the lead was a consequence of the quality of the game that we were replaying.
‘We could probably have created one or two more situations to score the second goal.
‘Hull started to use a more direct game. We had some moments where we could not keep the shape and the organisation we had in the first half before we lost Adam.
‘We had to stay back more and we had to be more compact.’
Pedro stepped off the bench to send Chelsea into the FA Cup semi-finals after they beat Leicester 2-1 at the King Power Stadium on Sunday evening.
RB Leipzig came from behind at the Red Bull Arena to end a run of four winless games and defeat Bundesliga leaders Bayern Munich 2-1 on Sunday.