The visitors were hanging on at the end as Sunderland bombarded their goal.
Arteta said: â€œYou have to win games like that. In the last five or 10 minutes they were hanging balls into the box.
â€œItâ€™s difficult to get the ball out when they do that, but we defended really well and Wojciech Szczesny made two or three outstanding saves. Criticism has to be constructive. Weâ€™re not as high in the table as we have the ability to be, so we know weâ€™re there to be criticised. The only thing we can do is improve where we are in the league.
â€œEveryone knows we play really good football at times and create a lot of chances. Hopefully from now to the end of the season we will move upwards in the league.
â€œBut we showed we can battle too. Itâ€™s always difficult with 10 men."