夹肌包括：

后面：腰方肌 · 腰大肌／腰小肌 · 胯肌

会阴浅隙（会阴浅横肌、球海绵体肌、坐骨海绵体肌）

The splenius muscles are:

Their origins are in the upper thoracic and lower cervical spinous processes. Their actions are to extend and ipsilaterally rotate the head and neck.