1naresh
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Location Cleft Arch Nerve Pouch First External ear canal Mandible, muscles of mastication, 5th cranial nerve, malleus, and incus Trigeminal nerve (V2 and V3) Eustachian tube, tympanic cavity, mastoid air cells Second Cervical sinus of His Muscles of facial expression, body and lesser horns of hyoid, 7th and 8th cranial nerves, stapes Facial nerve (VII) Palatine tonsil Third Cervical sinus of His Superior constrictor muscles, internal carotid artery, 9th cranial nerve, greater horn, and body of hyoid Glossopharyngeal nerve (IX) Inferior parathyroid, thymus, pyriform fossa Fourth Cervical sinus of His Thyroid and cuneiform cartilages, 10th cranial nerve, aortic arch and right subclavian artery, part of laryngeal muscles Vagus nerve (X), superior laryngeal nerve Superior parathyroid, apex of pyriform sinus Fifth and sixth None Portions of the laryngeal muscles and skeleton, inferior pharyngeal constrictor muscles, 11th cranial nerve Vagus nerve (X), recurrent laryngeal nerve Parafollicular ″C″ cells of thyroid gland