(A) Lip mucosa examined by everting upper and lower lips. (B) Tongue examined by having the patient protrude it. The examiner then grasps the tongue with cotton sponge and gently manipulates it to examine the lateral borders. The patient also is asked to lift the tongue to allow visualization of the ventral surface and the floor of mouth. (C) Submandibular gland examined by bimanually feeling gland through floor of mouth and skin under floor of mouth.