Peristomium

The peristomium is the second body segment in an annelid worm's body in the anterior end. It is directly behind the prostomium and contains the mouth, tentacular cirri, and sometimes feeding palps, which may instead occur on the prostomium. If an eversible pharynx is present, it is contained in this segment as well, and can fill up to 20 segments when inverted, depending on the species.

单词	peristomium
释义	peristomium /ˌperi'stəumiəm/ 英汉-汉英词典 n. 围口节(环节动物) 词组 \| 习惯用语您要查找的是不是： optometrist n. 验光师；视力测定者；配镜师 peritonitis n. 腹膜炎 presidium n. 主席团 peritoneum n. 腹膜 praseodymium n. 镨网络短语: peristomium 围口节 peristomium cirrus 围口触须英语百科 Peristomium The peristomium is the second body segment in an annelid worm's body in the anterior end. It is directly behind the prostomium and contains the mouth, tentacular cirri, and sometimes feeding palps, which may instead occur on the prostomium. If an eversible pharynx is present, it is contained in this segment as well, and can fill up to 20 segments when inverted, depending on the species.
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peristomium /ˌperi'stəumiəm/

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网络短语:

Peristomium