科普什么是 粘膜:
A mucous membrane or mucosa is a membrane that lines various cavities in the body and covers the surface of internal organs. It consists of one or more layers of epithelial cells overlying a layer of loose connective tissue. It is mostly of endodermal origin and is continuous with the skin at various body openings such as the eyes, ears, inside the nose, inside the mouth, lip, the urethral opening and the anus.
简单说:口腔、器官、胃、肠、尿道等器官里 由上皮组织和结缔组织构成的膜状结构
塞嘴里等不等于接触了粘膜这个问题不值得思考, 值得思考的是,当有人处于危难之时,给予深思熟虑后的帮助。
而不是一句:不对,你错了。
前面提到医生赐名,只指网名,因为这贴加了开心一笑标签