Others may be less so, like the buccinator, a muscle that attaches your cheek to your teeth, or the body's tiniest skeletal muscle, a one-millimeter-long tissue fragment called the stapedius that's nestled deep inside the ear.

其他的肌肉我们就比较陌生了，比如颊肌，这是一种把你的脸颊连接到牙齿上的肌肉，还有身体上最纤细的骨骼肌，一片一毫米长的组织材料，叫做镫骨肌，位于我们耳朵的深处。