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ابزار وبمستر

کنکور زیست و شیمی تبریز - نکات مربوط به بافت های بدن (قسمت چهارم - بافت عصبی)
کنکور زیست و شیمی تبریز
تقویتی و کنکور زیست شناسی و شیمی تبریز
به سایت ما خوش آمدید
ابزار اینستا گرام

- جانوران پرسلولی مثل انسان برای برقراری هماهنگی و پاسخ به محرک ها به دستگاه عصبی نیازمندند
- بافت عصبی شامل سلولهای عصبی (نورون) و غیر عصبی( نوروگلیا) میشود
- بعضی از سلولهای پشتیبان (نوروگلیا) به تغذیه نورون کمک میکنند بعضی به حفاظت از آنها میپردازند و بعضی غلاف میلین را میسازند
- ژن ساخت غلاف میلین در همه ی سلولهای هسته دار بدن وجود دارد ولی فقط در سلولهای پشتیبان بیان میشود
- بافت عصبی از دو بخش کلی دستگاه عصبی مرکزی (مغز ونخاع) و دستگاه عصبی محیطی (نورون های حسی و حرکتی و رابط) تشکیل شده است
- غلاف میلین با ایجاد گره های رانویه موجب افزایش سرعت هدایت ( نه انتقال) پیام عصبی میشود.

تالیف استاد ارزومند - دبیر زیست و شیمی تبریز




نوع مطلب : تقویتی تبریز، تدریس خصوصی تبریز، زیست، كنكور زیست تبریز، کنکور، تقویتی زیست تبریز، زیست دهم، جزوه زیست، 
لینک های مرتبط :

چهارشنبه 9 فروردین 1396
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