The Canaries were thumped 4-1 at home by Aston Villa on Tuesday, with former manager Paul Lambert enjoying a triumphant return to his old stomping ground.
Norwich had chances to put the tie to bed when it was 1-1, with goalscorer Steve Morison missing the target twice at the start of the second half and having an effort disallowed for offside, while Villa goalkeeper Shay Given produced a brilliant save to deny Grant Holt before a late brace from substitute Andreas Weimann sealed Villa's place in the semi-finals.
There is little time for Chris Hughton's men to dwell on their own Wembley dreams having been dashed, with the visit of the Latics presenting the opportunity to record a fifth straight home win.
"It is very important it doesn't carry on and when you get beat you always want to bounce straight back," Howson told reporters.
"It was fairly even with both teams going at it for a large period of the game and I think it could have swung both ways, so it is disappointing especially to lose here at home.
"However, the good thing is we go straight into another game come Saturday.
"Yes we are disappointed with the result, but it is a case of moving on to the Wigan game now."
While Hughton would have liked to have carried momentum forwards, he accepts getting another positive result in the Premier League this weekend was always more important.
Hughton, who turned 54 on Tuesday, is confident the players will provide the required response as they look to extend an unbeaten run in the Premier League which stretches back to October 20.
"Did we want to go through? Yes, absolutely we wanted to go through but our priority by far is to make sure we have got Premier League status next season," said Hughton, who has turned things around at Carrow Road following a testing start to the season.
"We have to take the defeat on the chin and then learn from it.
"They are good enough professionals and know we have to be better at the weekend, which is a real good opportunity at home to put things right.
"The players are down and disappointed because it was a semi-final at stake, but what we mustn't do is take away what they have achieved in the last couple of months and how good the team have been.
"It is my responsibility to make sure we get back on track."
Norwich were missing Wes Hoolahan and Alex Tettey through injury against Villa, but both could come back into contention against Wigan.
Hughton said: "Wes had a slight groin problem but we will see how he is over the next couple of days. I certainly have not ruled him out for Saturday and it is a similar situation with Alex."