basilemma

例句：

1. 1. The basal membrane is a thin layer that separates the blood vessels from the tissue.
   基底膜是一层薄的膜，将血管与组织分隔开。
2. 2. The basal membrane plays a crucial role in maintaining the integrity of the blood-brain barrier.
   基底膜在维持血脑屏障完整性方面起着至关重要的作用。
3. 3.In the development of the nervous system, the basal membrane is involved in the formation of myelin sheaths.
   在神经系统发育过程中，基底膜参与髓鞘的形成。