chiasmal arachnoiditis

例句：

1. 1. The chiasmal structure of the brain is crucialfor its functioning.
   大脑的节段结构对其功能至关重要。
2. 2. The chiasmaltracts in the spinal cord areresponsible for transmitting signals from the brainto the body.
   脊髓中的节段纤维负责将大脑的信号传递到身体。
3. 3. Thechiasmal division of the brain allowsfor the separation of sensory and motor functions.
   大脑的节段划分允许感官和运动功能的分离。