知识贝壳
知识贝壳
所属栏目：英汉双解生物学
One ofthe pair of nerves that arises from the posteri-or region of the medulla oblongata in thebrain of higher vertebrates. It carries motornerve fibers and merges with the adjacent va-gus nerve close to its root. In fishes and am-phibians it is considere ......（本文共 353 字 ） [阅读本文] >>