[名词解释] 焰细胞

"骨性"与"纤维性"关节强直的X线鉴别点是 ["A．关节间隙变窄","B．关节面糜烂","C．关节狭窄．硬化增生","D．关节狭窄，关节缘骨破坏","E．骨小梁通过关节间隙"] 雌雄同体 雷蚴 骨质软化是指 ["A．骨的有机成分增加","B．骨的无机成分减少","C．骨的有机成分正常，骨的无机成分减少","D．骨的有机成分减少","E．骨的有机成分和无机成分都减少"] 两侧对称 焰细胞