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 anteriorend of the medulla oblongata in the vertebratebrain to supply the posterior rectus muscle ofeach eyeball. It contains chiefly motor nervefibers. See cranial nerves.脊椎动物大脑内起始于延髓前端的支配眼球后直肌运动的一对神经 ......（本文共 249 字 ） [阅读本文]>>