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ÀÎü ¡í Áö¹æ ¡í µÎ³ú ³ú¿¡°Ô ¹è¿î´Ù : ´Ü¼øÇÑ ´ë»ç·Î °¡Àå º¹ÀâÇÑ ±â´É¼öÇà ÀÌ»óÀûÀÎ ½ÄÇ° & ÀÌ»óÀûÀÎ ¸ö - ½Ä¹°¿¡°Ô ¹è¿î´Ù : ´Ü¼øÈµÈ »î, µ¶¸³Àû »î ³úÀÇ ¿¡³ÊÁö¿ø - Æ÷µµ´ç Àν´¸°, Ç÷´ç GI - ketone body - ±Û·çŸ¹Î - Glucose trasnporter - ±Û·çÄ«°ï : Glucogenesis Free MSGµµ ¿Õâ, ÄÝ·¹½ºÅ׷ѵµ ¿Õâ, Áö¹æµµ ¿Õâ, Æ÷µµ´ç ¿Õâ °¡Áö°í Àְųª ¼ÒºñÇÏ°í, ³ú ÀÚü¿¡´Â °¨°¢ÀÌ ¾øÀ¸¸é¼ ¼¼»óÀ» °¨°¢ÇÏ°í, Äè°¨°ú ÅëÁõÀ» ¸¸µé°í ... ³ú¿¡¼ Àν´¸°À» ÅëÁ¦ÇØ Æ÷µµ´ç ÆßÇÁ¸¦ ÅëÁ¦ÇÏÁö ¾ÊÀ¸¸é Ç×»ó Æ÷µµ´ç ÆßÇÁ°¡ ÀÛµ¿ÇÏ¿© ºñ¸¸Àº À־ ´ç´¢´Â ¾øÀ»ÅÙµ¥, ºñŸ¹ÎC ÇÕ¼º·Â(=Æ÷µµ´ç ¼Òºñ·Â)µµ À¯Áö ÇßÀ»ÅÙµ¥ ¡Ü °¡Àå ³ªÁß¿¡ ÁøÈµÈ ±â°ü : ´Ü¼øÈµÈ ´ë»ç & º¹ÀâÇÑ ±â´É¼öÇà - ÀÌ»óÀûÀÎ ¸öÀ» ¼³°èÇÑ´Ù¸é - ½Ä¹° : ´Ü¼øÈµÈ ´ë»ç & µ¶¸³ÀûÀÌ°í ¿À·£ ¼ö¸í - µÎ³ú : ´Ü¼øÈµÈ ´ë»ç & º¹ÀâÇÑ ±â´É ¼öÇà ¡Ü ´Ü¼ø¼º : ³ú¸¸ÀÇ µ¶Æ¯ÇÑ MetabolismÀº ÀüÇô ¾ø´Ù - ³úÀÇ ´ëºÎºÐÀº ¹°ÀÌ´Ù. 77%ÀÌ»ó - °íÇüºÐÀÇ Àý¹ÝÀº ±â¸§ÀÌ´Ù. Æò±ÕÀÇ 2¹èÀÌ»ó, ¸¹Àº Á¢Á¡ - Ç¥¸éÀû ¸¹¾ÆÁü - ÄÝ·¹½ºÅ×·ÑÀÇ 25%´Â ³ú¿¡ ÀÖ´Ù. ³úÀÇ ÄÝ·¹½ºÅ×·ÑÀº ÀÚüÀûÀ¸·Î »ý»êµÇ¾î¾ß ÇÑ´Ù - Æ÷µµ´ç : °¡Àå ´Ü¼øÇÏ°í ±âº»ÀûÀÎ ¿¡³ÊÁö¿ø ¼±Åà ¡Ü ¶Ù¾î³ Â÷´Ü·Â - Æ÷µµ´ç¸¸ Åë°ú : Æ÷µµ´çÀÌ °ÅÀÇ À¯ÀÏÇÑ(95%) ¿¡³ÊÁö¿øÀÌ´Ù - ¶Ù¾î³ Â÷´Ü·Â - ȯ°¢¹°ÁúµîÀº ±ØÈ÷ Á¦ÇÑ ¡Ü °¡Àå ¿¡³ÊÁö¸¦ ¸¹ÀÌ ¾²´Â ±â°ü : °¡Àå º¹ÀâÇÑ ±â´É ¼öÇà - üÁßÀÇ 2%¿¡ ºÒ°úÇÏÁö¸¸ »ê¼ÒÀÇ 20% »ç¿ë, Æ÷µµ´çÀÇ 25% »ç¿ëÇÑ´Ù - Ç÷¾×ÀÇ 15% »ç¿ë The brain is extremely sensitive to hypoxia, and occlusion of its blood supply produces unconsciousness in as short a period as 10 seconds. The brain¡¯s consumption of glucose and oxygen are constant regardless of resting/ sleeping or active/ waking The glucose transporter, GLUT-1, is enriched High energy requirements (~1.0 mg/kg/min) Low energy reserves The energy is needed to maintain the ionic gradient across nerve membranes. ¡Ü »ý¸®Àû - ³úÁ¾¾ç : ¿Õ¼ºÇÑ È°µ¿¿¡ ºñÇØ ´Ù¸¥ ºÎÀ§¿¡ ºñÇÏ¿© µå¹°´Ù - °¨°¢¼¼Æ÷ ¾øÀ½ : ÅëÁõÀ» ´À³¢Áö ¾ÊÀ½ ±ÙÀ° µÎ³ú Water 75, 77~78 Lipids 5, 10~12 Protein 18~20 8 Carbohydrate 1, 1 Soluble organic 3~5, 2 Inorganic salts 1, 1 size = 140 * 167 * 93, 1400ml blood = 150 ml (10%); cerebrospinal fluid = 150 ml (10%) - û°¢À¸·Î 20ÆÛ¼¾Æ®, ÃË°¢À¸·Î 15ÆÛ¼¾Æ®, ¹Ì°¢À¸·Î 3ÆÛ¼¾Æ®, ÈÄ°¢À¸·Î 2ÆÛ¼¾Æ®¸¦ ¹Þ¾ÆµéÀÌ¸ç ³ª¸ÓÁö 60ÆÛ¼¾Æ®´Â ½Ã°¢, Áï ºû¿¡ ÀÇÇØ ¹Þ¾Æ µéÀδÙ. - ³ú°¡ ¼º¼÷Çϱâ À§Çؼ´Â ¼ö¹é¾ï°³ÀÇ ½Å°æ¼¼Æ÷°¡ ÇÊ¿äÇѵ¥ À̸¸ÇÑ ¼¼Æ÷¸¦ ¸¸µé±â Çؼ´Â Å»ý±â ¶§ ÀϺРµ¿¾È¿¡ 250¸¸°³ÀÇ ½Å°æ¼¼Æ÷(´º·±)ÀÌ ¸¸µé¾îÁ®¾ß ÇÑ´Ù. - ½Å°æ¼¼Æ÷´Â ÇÑ ¹ø Á×À¸¸é ´Ù½Ã Àç»ý µÇÁö ¾ÊÀ½. 20¼¼¿¡¼ 70¼¼ »çÀÌ¿¡ ¸ÅÀÏ 5¸¸°³ÀÇ ½Å°æ¼¼Æ÷°¡ Á׾´Ù. ±×·¡µµ ÀÏ»ýµ¿¾È Á׾´Â ½Å°æ¼¼Æ÷´Â ž ¶§ÀÇ 10ÆÛ¼¾Æ® ¹Ì¸¸ÀÌ´Ù. - üÁßÀÇ ¾à 2ÆÛ¼¾Æ®, ½Å¹®Áö ¨öÀÇ Ç¥¸éÀû ±×¸®°í 1,200-1,800ccÀÇ ºÎÇÇ, »ê¼Ò¿Í Æ÷µµ´ç ¼Ò¸ð·®Àº 20ÆÛ¼¾Æ®Á¤µµ, ´ÜÀ§ üÁß ´ç ´Ù¸¥ Àå±â¿¡ ºñÇØ 10¹è³ª ¸¹Àº ¿µ¾çºÐ °ø±Þ ³ú´Â Æ÷µµ´ç¸¸ »ç¿ë Average number of neurons in the brain = 100 billion % of cerebral oxygen consumption by white matter = 6% % of cerebral oxygen consumption by gray matter = 94% Average number of glial cells in brain = 10-50 times the number of neurons Length of myelinated nerve fibers in brain = 150,000-180,000 km Number of synapses in cortex = 0.15 quadrillion (Pakkenberg et al., 1997; 2003) Rate of neuron growth (early pregnancy) = 250,000 neurons/minute Surface area of cerebellar cortex = 50,000 cm2 Number of Purkinje cells = 15-26 million Number of synapses made on a Purkinje cell = up to 200,000 Weight of hypothalamus = 4 g Volume of suprachiasmatic nucleus = 0.3 mm3 Number of fibers in pyramidal tract above decussation = 1,100,000 Number of fibers in corpus callosum = 250,000,000 |
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