Ryan will not return after injuring his right big toe during the first quarter. He was wearing a walking boot on his right foot and a black warmup suit on the sideline in the second half.
Turner aggravated a right ankle injury during the third quarter. The Falcons said Turner wouldn't return.
Turner started Sunday after missing one game with a right ankle sprain.
Ryan left after Atlanta's first offensive series. He showed no sign of the injury while in the game, but he was limping when escorted to the locker room. He was back on the sideline at the end of the half.
Ryan received attention from trainers on the sideline and tested the foot before backup Chris Redman entered the game on the Falcons' second possession. Redman had his first pass attempts since 2007.
The Falcons also had starting offensive guard Harvey Dahl leave with ankle and Achilles' tendon injuries during the second quarter. He appeared to be favoring his left ankle as he walked to the locker room at the end of the first half. The team, which didn't disclose which leg he injured, said Dahl was questionable to return.
Bucs starting wide receiver Michael Clayton left the game with a knee injury during the first quarter. The team didn't disclose which knee Clayton injured.
Copyright 2009 by The Associated Press