membranella

例句：

1. 1. The membranella is a thin layer of tissue that separates the blood vessels from the surrounding tissue.
   膜瓣是一层薄组织，将血管与周围组织分隔开。
2. 2.The membranella is responsible for filtering out foreign particles from the bloodstream.
   膜瓣负责从血液中过滤掉外来颗粒。
3. 3.The membranella is also involved in the process of wound healing.
   膜瓣还参与伤口愈合的过程。