In Liverpool's situation, though, a point is not enough if last season's runner-up is to climb back into the Champions League places.
With almost half the season gone, Liverpool is nine points behind fourth-place West Ham.
Arsenal has been guilty of starting big games slowly in recent years and the team did so again here, with Liverpool's pace and movement too much for Arsene Wenger's side and Mathieu Flamini being badly exposed as Arsenal's holding midfielder.
Liverpool's fluid 3-4-3 formation, again containing winger Raheem Sterling as a main striker, seemed to befuddle Arsenal and the only surprise was that it took almost 45 minutes for the home side to score - and even then it was from an error.
Giroud's misjudged lay-off was pounced on by Jordan Henderson, who slipped the ball forward for Coutinho to jink past Debuchy and strike a low shot in off the post from just inside the area.
Outplayed, Arsenal did not deserve to go into halftime level but that was what happened after Flamini nodded a loose ball in the area onto Debuchy, whose header brushed against the back of Skrtel's head and deflected into the net.
It was almost the last touch of the half.The first half started with Skrtel needing lengthy treatment after being stamped on the head by Giroud, and the striker inflicted more pain on Liverpool by putting Arsenal ahead.
Giroud passed out wide to Santi Cazorla, whose return pass from the byline was met with a first-time finish from six meters through goalkeeper Brad Jones' legs.
Lucas Leiva, Coutinho and Borini all wasted decent chances but Liverpool's chance of an equalizer looked to have disappeared when Borini raked his studs across the chest and left arm of Cazorla.
Less than three minutes earlier, the Italian forward had been booked for chucking the ball away after a throw-in was awarded against him.Skrtel, who scored twice against Arsenal in Liverpool's 5-1 win in the corresponding fixture last season, came to the team's rescue with his late goal.
- AP