This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head & Neck, Subject name: Anatomy
Recurrent laryngeal nerve supplies all EXCEPT 
Select and explain. 
A. Vocalis, B. Cricothyroid, C. Thyro arytenoid, D. Cricoarytenoid
B: Cricothyroid
Answer: B: Cricothyroid 
Explanation: (Cricothyroid): (257-BDC-3 6th edition)Cricothyroid is supplied by the external laryngeal branch of the superior laryngeal nerveRight recurrent laryngeal nerve supplies1. All intrinsic muscles of larynx except cricothyroid2. Sensory nerves to the larynx below the vocal cords3. Cardiac branches to deep cardiac plexus4. Trachea and oesophagus5. Inferior constrictor