降眉间肌是位于额肌内侧部一小块锥形肌，可将眼眉的内侧端下拉，参与皱眉和双眉集中动作，同时有助于避免过强的光线。
鼻内肌群包括降眉间肌，它会抬高鼻背，降低外侧软骨。
The intrinsic group includes the procerus, which raises the dorsum and lowers the lateral cartilages.
降眉间肌起于鼻骨与鼻外侧软骨连接处以上，止于两眉内侧的水平线。
The origin of procerus was beyond the line between nasal bone and lateral nasal cartilage, and the insertion point was at the level of both medial eyebrows.
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