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What is Special sensory supply of the marked area is nerve? and explain in detail?
Developing tongue: - 1st pharyngeal arch: - Anterior 2/3rd of tongue & this pa will be developing from tuberculum impar& two lingual swellings. General sensory nerve of anterior 2/3rd: - Lingual nerve - Branch Of mandibular V3 (trigeminal V) Special senses of anterior 2/3rd (E.g: taste): - Chorda tympani neve - Branch Of facial nerve. IInd pharyngeal arch - minimal contribution to tongue development. - Disappear at a foramen C/A - foramen caecum IIIrd pharyngeal arch - develops posterior 2/3rd of tongue. General sensation Special (taste) sensation IXth nerve IXth nerve. IVth pharyngeal arch - contributes to development of posterior most of tongue &epiglottis. Nerve of IVth arch supplies the posterior most &epiglottis(vagus nerve ) .