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本期为神经介质专集,现将其中的主要内容介绍如下:鬼头昭三等在文中介绍:近年来由视丘下部释放的激素,对垂体激素进行调节的神经介质、消化道激素的神经介质,都广泛存在于包括脊髓在内的中枢和末梢神经系统以及消化道内。虽然构造相同,但由于存在部位不同,其机能意义也不同。它们在脑内的视丘下部、边缘系统、大脑基底核、脑干、大脑皮层和脊髓均有不同程度的存在。但在小脑则仅有少量的存在为其特征。该氏在确定神经传递物质的标准时,提出了以下几项:(1)在神经元内确有这种物质合成系统的存在;且以神经终末部为高;(2)由于适当的刺激可以产生活动,且从终末部可见有这种物质的释放;(3)在介质膜内有与该物质相应的受体,而且尚有其拮抗剂的存在;(4)当该物质成为介质传递媒介时,介质膜发生电位
This issue is a collection of neurotransmitters, now the main contents of which are described as follows: Kita Akagi and other articles introduced in the text: In recent years, the hormone released from the lower part of the hypothalamus, regulating pituitary hormone neurotransmitter, neurotrophin, Both are widespread in the central and peripheral nervous systems, including the spinal cord, and in the digestive tract. Although the same structure, but due to the existence of different parts, its function is different. They are in the hypothalamus in the brain, the limbic system, the basal ganglia, brainstem, cerebral cortex and spinal cord have varying degrees of existence. But there is only a small amount of existence in the cerebellum for its characteristics. In determining the criteria for neurotransmitters, the scholar proposed the following: (1) the presence of such a substance synthesis system in neurons; and the high end of the nerve terminal; (2) due to the appropriate stimulus Produce activity, and the release of this substance is visible from the terminal part; (3) there is a receptor in the media membrane corresponding to the substance, and still has the presence of its antagonist; (4) Media, the dielectric film potential