这种肌肉在口的周围形成一个环。当其收缩时,嘴唇紧缩闭合并压在牙齿上。当说话或噘嘴时,即会运用口轮匝肌。另有两块肌肉可使嘴唇张开。鼻子两侧各有一块上唇提肌,将上唇提起;同样地,下巴两侧各有一块下唇降肌,将下唇往下拉。皆能调节嘴部的动作。

Thumb
口轮匝肌

使嘴唇噘起的肌肉

来源

〈人体学习百科〉 猫头鹰出版社 ISBN 957-9684-11-1

外部链接

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.