Which of the following intrinsic laryngeal muscles is NOT derived from branchial arch VI:: (A) Cricoarytenoid muscle, (B) Interarytenoid muscle, (C) Thyroarytenoid muscle, (D) Cricothyroid muscle
Answer is D. Ans. (d) Cricothyroid muscleRef: Inderbir Singh's Embroyology, 7th ed. /119-120* All intrinsic laryngeal muscles is derived from branchial arch VI EXCEPT cricothyroid muscle.* Cricothyroid muscle is derived from branchial arch IV.