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Channel Posts
What happens during Phase 4 (resting potential) of the cardiac muscle action potential?
| 2 | قنوات البوتاسيوم
تنفتح بالمرحله الأولى والثالثه ( ارقام فرديه ) | 291 |
| 3 | Which phase of the cardiac muscle action potential is characterized by the closure of calcium channels and the opening of slow potassium channels? | 286 |
| 4 | During which phase of the action potential does the membrane potential remain positive due to the opening of calcium channels and closure of potassium channels? | 159 |
| 5 | What is the primary ion responsible for the initial repolarization during Phase 1 of the cardiac muscle action potential? | 123 |
| 6 | During Phase 1 (initial repolarization) of cardiac action potential, what contributes to the repolarization process? | 102 |
| 7 | بالـ مرحله الأولى please 1
*استقطاب اولي initial repolarization
*تنسد قنوات الصوديوم الموجبه sodium channels close
* تنفتح قنوات البوتاسيوم هم موجبه opening of
potassium ions
يعني البوتاسيوم K+ راح يطلع من الخليه
* جهد الغشاء +20 millivolt
down
يعني هنا الصوديوم close والبوتاسيوم open | 96 |
| 8 | During which phase of the action potential does the membrane potential become more positive due to the opening of sodium channels? | 93 |
| 9 | هسـة احنه عرفنا داخل الخليه سالب -90
وخارجها موجب
بالمرحلـة الـزيرو phase 0
* يصير إزاله استقطاب depolazisation
* تنفتح أيونات الصوديوم الموجبه sodium channel open
* يكون membrane potential جهد الغشاء +20 millivolts | 91 |
| 10 | Which ion is responsible for the initial depolarization during the cardiac muscle action potential? | 91 |
| 11 | During which phase of the cardiac muscle action potential does depolarization occur? | 85 |
| 12 | هسه المراحل ضبطوا الاختبارات 👇🏻 | 84 |
| 13 |  هاي الصفحة اتطلعوا عليها قبل المراحل
ديگول عضله القلب بحاله الراحة داخلها سالب وخارجها موجب
اما اثناء العمل يكون داخلها موجب
والسبب موجود | 90 |
| 14 | What is the significance of the delay in electrical potentials in the AV node? | 83 |
| 15 | What is the main role of the SA node in the conductive system of the heart? | 99 |
| 16 | تابعة للاختبارات الفوگ ، انتبهوا عليها | 110 |
| 17 | Which of the following is responsible for delaying the electrical impulses between the atria and ventricles? | 87 |
| 18 | Which of the following is responsible for the depolarisation of the ventricles in the heart? | 71 |
| 19 | Which of the following is responsible for the contraction of the ventricles in the heart? | 71 |
| 20 |  انتبهوا لفد نقطة انُ ألياف بركينجي التي تنقلها إلى جميع العضلات البطينية مسببة زوال الاستقطاب البطيني الذي يتبعه مباشرة انقباض البطين | 72 |
