Motor system consist of any nucleus or area of the brain or the spinal cord that is involved with motor function.
Visual system
下丘脑是由多个神经核组成,这些神经核有着非常不同的功能。但是他们的相似之处是,他们都是为了维持体内平衡而工作的homeostasis
Hypothalamus will tell us when we are thirsty, hungry, full
The limbic system边缘系统
reticular formation网状结构
早年的ns认为是网状结构,实际上在其中发现了110种以上的神经核,控制心率,意识……
轴突 = 白质
一束轴突 = 神经nerves = pathways in CSN不同神经核之间的通道
神经元的细胞体从一开始就不会移动,会移动的是axon轴突。我们根据灰质(细胞体)的属于哪个系统来划分。轴突是根据作用来划分。
轴突组成了白质,是不同脑区间信息的通道。
we classify axons in to three different types.不是很严谨的做法。
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Association pathways - a bundle of axons that connect different part of the cortex in the same hemisphere
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Commissural pathways - pathways of axons that connect one hemisphere with the other hemisphere. 胼胝体连接着两个半球中相互对应的脑区corpus callosum
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projection pathways - axons that leave their nuclei and connect various other nuclei in various systems. 几乎所有轴突都可以算是。轴突从神经核出去,连接到不同的神经核上
命名方法:
corticospinal tract 皮层-脊髓通道
Cortical - the origin of the cell body
Spinal - where the axon ends
Retinogeniculate pathway 视网膜-膝状体通道