文档介绍：Nervous tissue 神经组织
丁英
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The content of the class
recording: 录像
nervous tissue 神经组织
slides: 玻片观察
(1)multipolar neuron 多极神经元 HE
(2)neurofibril 神经原纤维 Silver staining
(3)myelinated nerve 有髓神经纤维 HE NO. 27-1,-2
(4)tactile corpuscle 触觉小体 HE
(5)Lamella corpuscle 环层小体 HE
(6)spinal ganglia. 脊神经节 HE 24号
neuron多极神经元 HE
Low porwer of Spinal cord脊髓
Gray matter
灰质
White matter
白质
This specimen is elliptic in shape. In the center of it there is an H shaped structure, the gray matter, stained thicker horns are anterior horns. 样本椭圆形,中央深染的H形结构即为灰质。前角比较宽。
Anterior horns前角
Posterior horn 后角
Low porwer(10Χ):The multipolar neurons can be found in the anterior horns of the gray matter. The cell bodies can be round or ovoid. The other smaller and round nucleus are the nucleus of glial cell. 低倍镜10*:在灰质前角可见成群排列的多极神经元,胞体圆形或卵圆。另外可以看到神经胶质细胞,核较小,圆形。
white matter
gray matter
motor neuron
High power (40Χ) :The nucleus of multipolar neurons is large, round, palely stained, centrally located and with a prominent nucleolus. The cytoplasm contains many granular areas, the Nissl bodies, stained in dark blue color.
Nissl bodies
glial cell.
(Motor neurons)
(chromatin)
(nucleolus )
(nuclear membrane )
高倍镜40*:多及神经元的核大而圆,淡染,位于胞体中央,核仁明显。
胞质含有许多染成紫蓝色呈块状或粒状分布的尼氏体(名解)。
(axon)
(dendrite)
(hillock)
(multipolar neuron of spinal cord)
High power: Every multipolar neurons only have one axon and several dendrites.
Axon hillock is the marked site of origin of the axon. In axon hillock ,
the Nissle body is deficient.
多极神经元只有一条轴突,但有多个树突。
轴丘是轴突的起始部位,染色淡,没有尼氏体。
Neuron contains abundant plexes and Nissl bodies, indicating active synthesis.
神经元里有丰富的高尔基复合体及尼氏体,表明合成活跃。
Nissl body:
RER
Free ribosome
Neurofibrils can be found in neurons when they are impregnated with silver. With low magnification,examine the anterior of the spinal cord, to identify the giant yellow or brown multipolar shift