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თემა 27: გაკვეთილი 2

ნეირონი და ნერვული სისტემა

ნეირონის ანატომია

ნეირონები (ანუ ნერვული უჯრედები) სპეციალიზებული უჯრედებია, რომლებიც ორგანიზმში ელექტრულ სიგნალებს იღებენ და გადასცემენ. ნეირონი სამი ნაწილისგან შედგება: დენდრიტები, უჯრედის სხეული და აქსონი. სიგნალებს, ანუ იმპულსებს, დენდრიტები იღებენ. ისინი შემდეგ ჯერ უჯრედის სხეულისკენ ტარდება, შემდეგ კი აქსონს დაუყვება, სანამ სინაფსამდე არ მიაღწევს (სინაფსი ორი ნეირონის კავშირის ადგილია). შემქმნელია სალ ხანი.

ვიდეოს აღწერა

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