下鼻甲 (鼻甲下鼻甲) - 一對,薄弧形盤,有一個身體和三個過程。身體的側面及其上緣與上頜骨的嵴頂和腭骨的垂直板融合在一起。這個殼的所有過程都離開它的上邊緣。
淚腺組織(淚小點)上升到淚腺,上頜骨(上頜骨)指向下。它部分關閉了上頜裂。在殼的後緣位於一個網格狀的過程(processus ethmoidalis),該過程向上並且連接網格狀骨的鉤狀過程。
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下鼻甲 (鼻甲下鼻甲) - 一對,薄弧形盤,有一個身體和三個過程。身體的側面及其上緣與上頜骨的嵴頂和腭骨的垂直板融合在一起。這個殼的所有過程都離開它的上邊緣。
淚腺組織(淚小點)上升到淚腺,上頜骨(上頜骨)指向下。它部分關閉了上頜裂。在殼的後緣位於一個網格狀的過程(processus ethmoidalis),該過程向上並且連接網格狀骨的鉤狀過程。
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