A.自下頜神經(jīng)分出后往下前行,在顳肌止端上份進(jìn)入顳肌鞘膜 B.在下頜支前緣內(nèi)側(cè),與顳肌腱纖維平行往下 C.大約在相當(dāng)于下頜磨牙牙合面,頰神經(jīng)離開(kāi)鞘膜 D.分布于頰部及下頜第一、二、三磨牙頰側(cè)牙齦、骨膜及附近的黏膜組織 E.在下牙槽神經(jīng)阻滯麻醉過(guò)程中,針尖退至肌層、黏膜下時(shí)注射麻醉藥0.5~1ml,即能麻醉頰神經(jīng)
A.上牙槽前神經(jīng) B.鼻腭神經(jīng) C.腭前神經(jīng) D.上牙槽中神經(jīng) E.腭中、后神經(jīng)
A.上牙槽后神經(jīng) B.上牙槽前神經(jīng) C.上牙槽中神經(jīng) D.腭前神經(jīng) E.腭中、后神經(jīng)