Henderson left practice on a cart but the Jaguars listed Henderson on their injury report as limited in practice because of a team decision, which is supposed to mean that Henderson isn't injured.
Henderson missed practice Wednesday for what the team said were "personal reasons" and he was not available for interviews during the media time in the locker room Thursday.
Henderson ran before practice during the media viewing time so he may have a conditioning problem.
The Jaguars don't have to list the condition of their players until today when they'll have to give some indication of what his chances are of playing.
The timing couldn't be worse for the Jaguars because they're already short of defensive tackles in the wake of Marcus Stroud's four-game suspension for violating the league's steroids policy.
Rob Meier was supposed to start for Stroud and Grady Jackson, who was signed last week after being cut by Atlanta, will probably start if Henderson can't go.
And the line play is expected to be critical Sunday because the Titans ran for 282 yards in the first game against the Jaguars. And the linemen will have to chase elusive quarterback Vince Young.
Henderson's play has been somewhat baffling this year. Even coach Jack Del Rio conceded he hasn't played at his Pro Bowl level of the past when he said Paul Spicer was the only defensive lineman playing well. But Henderson isn't coming off a major injury the way Stroud and Reggie Hayward are so there's no apparent reason for his dropoff in play.
Besides Henderson, Meier and Jackson, the only other defensive tackle on the roster is rookie Derek Landri. But they may have a spot open on the roster after waiving tight end Isaac Smolko Thursday, so they could sign another defensive tackle today.
In another roster move, they re-signed wide receiver Chad Owens to the practice squad. Owens, originally drafted by the Jaguars in the sixth round in 2005, was in Tampa Bay's training camp and was cut on Aug. 27th.
Meanwhile, the Jaguars quarterback situation remains very confusing.
That may be just the way they want it, to keep the Titans guessing.
Garrard said Thursday his ankle feels fine and if it was his decision, he could start.
"I honestly didn't think it was going to feel that good," he said after there was no swelling Thursday.
But the Jaguars announced that Garrard only saw limited duty in practice Thursday for the second consecutive day.
Of his Wednesday duty, he said, "I didn't get a whole lot of snaps with the ones (first team). But I did take some scout team snaps. It just felt good being out there."
As far as playing, Garrard said, "I'm going to leave it up to the coaches and what they feel."
So the Jaguars have to decide to go with Garrard, who's missed two weeks and has seen limited duty in practice or give Quinn Gray his third start.
"I'm preparing as if I'm going to play. From the looks of it, I'm getting the snaps with the first team. Unless I'm told something different, that's what it'll be (Gray starting)," Gray said.
The Jaguars are likely to wait until game time Sunday to announce which quarterback will start.
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