Cough reflex on scratching the floor of external auditory meatus is due to which nerve?
Nerve Supply of External acoustic meatus Anterior wall and roof by auriculotemporal nerve Posterior wall and floor by auricular branch of vagus nerve (Arnold N) Posterior wall of auditory canal also receives innervations by facial nerve through auricular branch of vagus Cough reflex is d/t internal laryngeal N. Cough's reflex during syringing is d/t Arnold's Nerve
Auricular branch of vagus
Auriculo temporal
Greater auricular nerve
Facial nerve
NEET Jan 2020