Anatomy & Histology · single question
Which muscle ELEVATES the tongue?
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Correct answer: E. Both C and D are correct for elevation
✓ E) Both styloglossus and palatoglossus elevate the tongue.
Tongue muscle functions: GENIOGLOSSUS = protrudes tongue (largest tongue muscle, CN XII); HYOGLOSSUS = depresses and retrudes; STYLOGLOSSUS = elevates and retrudes tongue (CN XII); PALATOGLOSSUS = elevates POSTERIOR tongue and narrows fauces (CN X — vagus nerve, NOT CN XII); Intrinsic muscles = alter shape. Elevators of tongue: styloglossus primarily (elevates and draws back), palatoglossus elevates posterior portion. The palatoglossus is the only tongue muscle innervated by CN X instead of CN XII.
Tongue muscle functions: GENIOGLOSSUS = protrudes tongue (largest tongue muscle, CN XII); HYOGLOSSUS = depresses and retrudes; STYLOGLOSSUS = elevates and retrudes tongue (CN XII); PALATOGLOSSUS = elevates POSTERIOR tongue and narrows fauces (CN X — vagus nerve, NOT CN XII); Intrinsic muscles = alter shape. Elevators of tongue: styloglossus primarily (elevates and draws back), palatoglossus elevates posterior portion. The palatoglossus is the only tongue muscle innervated by CN X instead of CN XII.
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