Anatomy & Histology · single question
CN VII (facial nerve) taste function covers which portion of the tongue?
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Correct answer: B. Anterior 2/3
✓ B) Anterior 2/3 of the tongue is correct.
CN VII (via the chorda tympani → lingual nerve) provides TASTE to the anterior 2/3 of the tongue. CN IX (glossopharyngeal) provides taste to the posterior 1/3. CN X (vagus) provides taste to the epiglottic region. General sensation (touch/pain) to anterior 2/3 = CN V3 (lingual nerve). This is a classic board distinction: taste = CN VII (anterior), CN IX (posterior); sensation = CN V3 (anterior), CN IX (posterior).
CN VII (via the chorda tympani → lingual nerve) provides TASTE to the anterior 2/3 of the tongue. CN IX (glossopharyngeal) provides taste to the posterior 1/3. CN X (vagus) provides taste to the epiglottic region. General sensation (touch/pain) to anterior 2/3 = CN V3 (lingual nerve). This is a classic board distinction: taste = CN VII (anterior), CN IX (posterior); sensation = CN V3 (anterior), CN IX (posterior).
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