noun 다운로드 🔗공유 상피 A membranous tissue composed of one or more layers of cells which forms the covering of most internal and external surfaces of the body and its organs: internally including the lining of vessels and other small cavities, and externally being the skin. Examples : "The doctor examined the tissue sample to see if the epithelium was healthy. " 의사는 상피가 건강한지 확인하기 위해 조직 샘플을 검사했다. medicine physiology anatomy organ body biology science AI와 채팅어휘 게임독해 연습