73 腰椎之椎間關節突關節(zygapophyseal joint)成像中,蘇格蘭犬(scotty dog)之"鼻子"代表的是腰椎何處結構? (A)椎莖(pedicle) (B)橫突(transverse process) (C)上關節突(superior articular process) (D)下關節突(inferior articular process)