Lamina externa

例句：

1. 1. The cells in the Lamina externa are responsible for protecting the tissue from damage.
   外层细胞负责保护组织免受损伤。
2. 2.The researcher discovered that the Lamina externa plays a crucial role in wound healing.
   研究者发现外层膜在伤口愈合过程中起着至关重要的作用。
3. 3. The Lamina externa is composed of several layers that work together to protect the underlying tissue.
   外层由多层组成，共同保护下面的组织。