我想有个我们的大房子，我们在里面快快乐乐的生活，相亲相爱一辈子...下辈子也要一起，还要养一只狗狗！ 

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[SCZ]BRAIN CELLS
幸福的小孩 发表于 2006/9/20 20:54:32

GLIAL CELLS Glial cells make up 90 percent of the brain's cells. Glial cells are nerve cells that don't carry nerve impulses. The various glial (meaning "glue") cells perform many important functions, including: digestion of parts of dead neurons, manufacturing myelin for neurons, providing physical and nutritional support for neurons, and more. Types of glial cells include Schwann's Cells, Satellite Cells,
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[SCZ]BRAIN CELLS
幸福的小孩 发表于 2006/9/20 20:54:32

The brain and spinal cord are made up of many cells, including neurons and glial cells. Neurons are cells that send and receive electro-chemical signals to and from the brain and nervous system. There are about 100 billion neurons in the brain. There are many more glial cells; they provide support functions for the neurons, and are far more numerous than neurons. There are many type of neurons. They vary in size from 4 microns (.004 mm) to 100 microns (.1 mm) in diameter. Their length

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[SCZ]Fatty Acids, Intelligence and Cognitive Decline
幸福的小孩 发表于 2006/9/20 20:54:32

It’s no secret that fatty acids are key building blocks to a healthy brain. What you may not know is that certain fatty acids have been shown to actually boost intelligence and an imbalance of fatty acids may be linked to hyperactivity, depression, brain allergies, and schizophrenia. Find out the hidden secrets of fatty acids here. Imbalance of Fatty Acids and Mental Disorders


[SCZ]Fatty Acids, Intelligence and Cognitive Decline
幸福的小孩 发表于 2006/9/20 20:54:32

It’s no secret that fatty acids are key building blocks to a healthy brain. What you may not know is that certain fatty acids have been shown to actually boost intelligence and an imbalance of fatty acids may be linked to hyperactivity, depression, brain allergies, and schizophrenia. Find out the hidden secrets of fatty acids here. Imbalance of Fatty Acids and Mental Disorders


[SCZ]Essential Fatty Acids
幸福的小孩 发表于 2006/9/20 20:54:32

Essential Building Materials–To build brain cells you need fatty acids. Two kinds of fatty acids are considered "essential," which means you must get these essential fatty acids (EFAs) from the food you eat. Your body cannot manufacture them. The first essential fatty acid you need is Alpha-linolenic acid (ALA). ALA is the foundation of the "om


[SCZ]Fats Build Your Brain
幸福的小孩 发表于 2006/9/20 20:54:32

No offense, but you have a fat head! About two-thirds of your brain is composed of fats. But not just any kind. Your brain cells require very specialized fats – the same ones that built the brains of your prehistoric ancestors and enabled them to learn and evolve at such a fast rate. These same fats are even now being incorporated into the very structure of your brain.


[SCZ]BRAIN
幸福的小孩 发表于 2006/9/20 20:54:32

The above picture names all of the centers found in the brain. The hard, permanent wiring for each of the centers develops at a different time before and after birth has led neuroscientists and brain biologists to label these periods as "windows of opportunity." The window of opportunity for motor development begins before birth and closes around the age of two. The windows of opportunity for the hard wiring to occur open and close at different times. For example, the


[SCZ]花生四烯酸及其代谢物的生物学作用
幸福的小孩 发表于 2006/9/20 15:30:30

花生四烯酸(arachidonic acid)简称AA，是5，8，11，14-二十碳四烯酸.它是人体的一种必需脂肪酸.该脂肪酸含有20个碳原子，4个双键，其中第一个双键起始于甲基端起第6个碳原子，故属于n-6系列的多不饱和脂肪酸，简记为20∶4(n-6). 1　AA的存在与分布
　　AA广泛分布于动物的中性脂肪中，牛乳脂、猪脂肪、牛脂肪、血液磷脂、肝磷脂和脑磷脂中含量较少(约为1%)，肾上腺磷脂混合脂肪酸中也含有该成分(15%).在油料种子中的分布也比人们原先估计的要广泛一些，是花生油中的一种主要成分.Sohlek等人从几种苔藓和蕨类植物中检测到了AA.另外，在日本沙丁鱼油中，也分析出一定数量的花生四烯酸.AA也是人体中含量最高，分布最广的一种多不饱和脂肪酸(PUFA).尤其是在脑和神经组织中，AA含量一般占总PUFAs的40%～50％.在神经末梢甚至高达70％.在正常人的血浆中的含量也高达400 mg/L，而DH-γ-亚油酸(DHLG)含量为1


[SCZ]花生四烯酸Arachidonic Acid
幸福的小孩 发表于 2006/9/20 15:04:59

花生四烯酸（Arachidonic Acid，简称AA）即5，8，11，14-二十碳四烯酸，它是人体中最重要的一种多不饱和脂肪酸（PUFA），是人体“必需脂肪酸”之一，属n-6系列，简记为20：4( n-6)，其分子结构式如下： AA是多种生物活性物质的前体，在人体内由油酸转化而来，它在生物体内主要是以磷脂的形式存在于细胞膜上，在磷脂酶A2和磷脂酶C的作用下分解成游离的AA。AA的释放受磷脂酶A2和磷脂酶C的调节。虽然游离的AA在正常的生理状态下水平很低，但当细胞膜受到各种刺激时，AA便从细胞膜的磷脂池中释放出来，并转变为具有生物活性的代谢产物。目前知道至少有三类酶参与AA的代谢，形成具有生物活性的二


[SCZ]EPA
幸福的小孩 发表于 2006/9/20 13:59:35

近年来，许多科学家研究分析，发现鱼类的脂肪含有较高的二十二碳五烯酸（简称EPA），还发现鱼中含一种叫氨基乙磺酸的物质，这两种物质对健身健脑都非常有益。EPA是一种高度不饱和脂肪酸，具有调节体内脂肪代谢、搞血小板凝集、抗血栓形成、降低血胆固醇含量的作用。常摄食EPA含量多的鱼可以有效地防治动脉硬化，预防血栓的形成。氨基乙磺酸是一种含硫的氨基酸，一般的鱼类中都含有这种物质。有研究发现，氨其乙磺酸的作用有多种，如它是胎儿和新生儿大脑眼睛正常发育所必不可少的氨基酸；具有调节血压和维持血压正常的功能，可使血液中的低密度脂蛋白、胆固醇减少，而使高密度脂蛋白胆固醇增多，从而防止动脉硬化，延缓和减轻动脉硬化的发生发展，有效地防止心脑血管疾病的发生。另外，它还有促进胰岛分泌、抑制血糖上升和促进荷尔蒙分泌的作用。另外，鱼富含二十二碳六烯酸（简称DHA），这种物质对及细胞脑神经的生长发育有着重要作用。经常食鱼，能活化大脑神经细胞，改善大脑机能，提高判断力，对记忆力也有良好的作用。老年人多食鱼，对益寿健脑是有好处的。

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blog名称:cathy的糖果屋
日志总数:47
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