轴突中含有轴向细胞骨架，负责将合成于神经元胞体内、含有神经递质的囊泡运输到轴突末端的突触前膜。Log in Do not have an account still? Register here A text information using your code has long been sent to:While in the International Phonetic Alphabet, ⟨a⟩ is utilized for the open front unrounded vowel,