WEBVTT

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Axırıncı vidyodan bilirk ki,
əzələ hüceyrəsi içərisində

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yüksək kalsiyum konsantrasiyası olsa,
bu kalsiyum iyonu gedib troponin zülalına

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bağlanacaq, bununla onun forması
elə dəyişəcək ki,

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tropomiyozin ortalıqdan çəkiləcək

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və beləliklə miyozinin başı
aktin sapları üzərində

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sürünəbiləcək və bununla da əslində

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əzələ büzülməsi baş verəcək.

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Deməli yuxarı kalsiyum konsantrasiyası,
ya da kalsiyum iyon konsantrasiyası,

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əzələ büzülməsi deməkdir.

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Aşağı kalsiyum iyon konsantrasiyası, bu
troponin zülallarının standard vəziyətinə

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qayıtmasına və tropomiyozinlərin geriyə

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qayıtmasına səbəb olur

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və büzülmə baş vermir.

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Bundan sonraki əsas sual budur ki,
əzələ

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yüksək kasiyum konsantrasiyası
və büzülməni ya da ki

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aşağı kalsiyum konsantrasiyası və
rahatlamanı necə tənzimliyir? Ya da daha

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yaxşı bir sual, sinir sistemi

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bunu necə edir?

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Sinir sistemi əzələyə büzülməsini,kalsiyum

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konsantrasiyasını yülksəldərək büzülməsini

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ya da aşağı salaraq rahatlamasını necə deyir?

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Bunu başa düşmək üçün
neyron vidyosunda

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öyrəndiklərmizi bir az təkrar edək.

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Bir aksonun terminal qovşağını

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burada çəkim.

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Başqa bir sinirin dentrində
sinaps eləməkdənsə,

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gedib həqiqi əzələ hüceyrəsi ilə

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sinaps eliyəcək.

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Yəni bu onun əzələ hüceyrə ilə sinapsıdır.

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Bu həqiqi əzələ hüceyrəsi ilə sinapsdır.

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Gəl hər şeyi adlandırım ki 
qarışdırmıyasan.

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Bu aksondur.

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Bunu aksonun terminal ucu
adlandıra bilərik

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Bu sinapsdır.

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Neyron vidyosundan balaca bir 
terminologiya- bu bölgə

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sinaptik yarıqdır.

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Bu presinaptik neyrondur.

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Bu

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postsinpatik hüceyrədir

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Bu da nöyrondur.

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Və bu da əzələ hüceyrəsinin

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membranıdır.

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Və çox güman ki
bundan sonraki video ya da ondan

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sonrakində
əzələ hüceyrəsinin anatomiyasını

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göstərəcəm.

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