茎乳孔（stylomastoid foramen），解剖学名词，指位于颞骨的茎突和乳突之间的孔。为面神经管的下口，面神经由此出颅。
结果：大鼠面神经出茎乳孔后可分为两段。
Results: The extracranial section of rat facial nerve was divided into 2 segments.
在50个完整颅骨（100例）上观测茎乳孔及其邻近结构。
Stylomastoid foramen and its adjacent structures were observed and measured on 50 intact skulls(100 sides).
面神经由茎乳孔出颅后，经腮腺、咬肌和颊区三段分布于面肌。
Facial nerve was divided into three segments (parotid gland, masseter and cheek) after leaving skull from stylomastoid foramen.
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