Protrusion of tongue not possible in damage of: (A) Styloglossus, (B) Hypoglossus, (C) Palatoglossus, (D) Genioglossus
Answer is D. ACTIONS OF EXTRINSIC MUSCLES OF TONGUE: Hyoglossus-Depress the tongue Styloglossus-Retracts the tongue Palatoglossus-Elevates the tongue Genioglossus-Protrudes the tongue NOTES: Genioglossus muscle is a life-saving muscle Ref BDC volume 3,sixth edition pg 266