Innervation of the digastric muscle?

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Multiple Choice

Innervation of the digastric muscle?

Explanation:
Two bellies of the digastric muscle have different innervation. The anterior belly is supplied by the mandibular division of the trigeminal nerve (CN V3) through the nerve to mylohyoid, which innervates this portion as it runs from the mandible to the intermediate tendon. The posterior belly is supplied by the facial nerve (CN VII) via a digastric branch. This combination—anterior by V3 and posterior by VII—explains why that pairing is correct. Other nerves listed (V2, IX, X) do not innervate these bellies, and the anterior belly is not innervated by VII.

Two bellies of the digastric muscle have different innervation. The anterior belly is supplied by the mandibular division of the trigeminal nerve (CN V3) through the nerve to mylohyoid, which innervates this portion as it runs from the mandible to the intermediate tendon. The posterior belly is supplied by the facial nerve (CN VII) via a digastric branch. This combination—anterior by V3 and posterior by VII—explains why that pairing is correct. Other nerves listed (V2, IX, X) do not innervate these bellies, and the anterior belly is not innervated by VII.

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