口轮匝肌
使嘴唇噘起的肌肉
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。
Orbicularis oris muscle
中文百科
英语百科
Orbicularis oris muscle 口轮匝肌
In human anatomy, the orbicularis oris muscle is a complex of muscles in the lips that encircles the mouth. Until recently, it was misinterpreted as a sphincter, or circular muscle, but it is actually composed of four independent quadrants that interlace and give only an appearance of circularity.
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