血腦屏障
From Wikipedia, the free encyclopedia
From Wikipedia, the free encyclopedia
血腦屏障(blood-brain barrier)係保護個腦嘅一浸屏障:脊椎動物嘅腦由一浸腦膜(meninges)包住,令到個腦唔會直接掂到個頭殼;腦膜上面有一啲細嘅窿,俾血管通過並且將帶氧嘅血傳俾腦嘅組織用,呢啲血管嘅壁嘅細胞之間封得好冚,形成咗血腦屏障,呢個屏障會阻擋好多毒素同病原體,等佢哋冇得傷害個腦[1]。同時,血腦屏障有陣時又會阻住某啲藥或者抗體通過,搞到喺醫治腦病嗰陣,啲藥劑師好多時要大費周章先至可以令到啲藥生效[2]。
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