外鼻(external nose)呈锥体形,故有鼻锥体(na sal pyramid)之称,由骨和软骨构成支架,外覆皮肤及软组织。上侧鼻软骨(upper lateral nasal cartilage)又名侧鼻软骨(lateral nasal cartilage)或隔背软骨鼻背板(dorsal nasal plate of septodorsal cartilage),左右各一,呈三角形。下缘依靠籽状软骨固着于下侧鼻软骨(大翼软骨)上缘。小翼软骨(lesser alar cartilage)为形状和数目不 ......