该段舌下神经上方有舌神经及其伴行静脉、下颌下腺导管、下颌下腺深部；

There are lingual nerve and its companion veins, submandibular ducts, the deep part of the submandibular gland on this segment of hypoglossal nerve;

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该段舌下神经上方有舌神经及其伴行静脉、下颌下腺导管、下颌下腺深部；

There are lingual nerve and its companion veins, submandibular ducts, the deep part of the submandibular gland on this segment of hypoglossal nerve;

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