单项选择题
A.前带 B.中带 C.后带 D.双板区和中带 E.前伸部和前带
A.二腹肌 B.腭舌肌 C.下颌舌骨肌 D.颏舌骨肌 E.基突舌骨肌
A.提上唇肌、降口角肌和颈阔肌 B.降下唇肌、降口角肌和颈阔肌 C.降口角肌、颏肌和颈阔肌 D.提上唇肌、降口角肌和颏肌 E.降下唇肌、颏肌和颈阔肌