题目内容
（多选题）面部表情肌的2个特点是
2021-11-13
A.位置表浅
B.起于骨面或筋膜，止于骨面
C.数目较多，收缩力较强
D.协同作用时可表达多种表情
E.颊肌、笑肌、咬肌等均为表情肌
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