<prompt> Mallampati score is used in:Thoracoabdominal angular curvature during respirationFlexion and extension of neck during intubationFree rotationTo assess difficulty in intubation in oral cavity  <response>: Mallampati score is used to predict difficult tracheal intubation based on the size of tongue base relative to the oropharyngeal space. Mallampati classification: Class I: soft palate, fauces,entireuvula, pillars Class II: soft palate, fauces,poionof uvula Class III: soft palate, base of uvula Class IV: hard palate only 