Tunica adventitia: entirely made of connective tissue.
外膜:完全由结缔组织构成。
Inadequate cell nutrition around vessels causes degeneration of tunica adventitia.
血管周围细胞的营养不足,引起外膜的变性。
The oviduct ampulla and isthmus were composed of mucous layer, tunica muscularis and adventitia.
壶腹部和峡部均由黏膜层、肌层和外膜构成。
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