这个词是什么意思？
The medial terminal branch of the sciatic nerve. The tibial nerve fibers originate in lumbar and sacral spinal segments (L4 to S2). They supply motor and sensory innervation to parts of the calf and foot.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D013979 · MeSH 2026。
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