External laryngeal nerve supplies
- Superior Constrictor.
- Middle Constrictor.
- Inferior constrictor.
- None of the above
The Correct option is A
Explanation with High Yield Facts:
The external laryngeal nerve, smaller than the internal, descends posterior to the sternothyroid with the superior thyroid artery but on a deeper plane; it lies at first on the inferior pharyngeal constrictor and then, piercing it, curves round the inferior thyroid tubercle to reach and supply the cricothyroid. It also supplies the pharyngeal plexus and inferior constrictor; behind the common carotid artery it connects with the superior cardiac nerve and superior cervical sympathetic ganglion.
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