Ngata suffered a sprained medial collateral ligament in his right knee and an injured right shoulder in the Sunday’s 31-29 win against the Dallas Cowboys. Kemoeatu is also dealing with a right knee injury, and Smith injured his groin Sunday.
Offensive tackle Bryant McKinnie participated on a limited basis due to a thigh injury.
Seven starters were limited in practice. They were right guard Antoine Caldwell (concussion), nose tackle Shaun Cody (back), tight end Owen Daniels (non-injury related), running back Arian Foster (non-injury related), inside linebacker Bradie James (calf), wide receiver Andre Johnson (non-injury related), and defensive end Antonio Smith (non-injury related).