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@dr.maysaljuboori: الدكتوره ميس الجبوري بغداد_اليرموك

الدكتوره ميس الجبوري
الدكتوره ميس الجبوري
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Region: IQ
Thursday 08 August 2024 19:19:52 GMT
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Comments

mohannad68955
Mohannad :
ماشاء الله
2024-08-08 19:31:37
0
kdkdd725
user4040665374415 :
روعة 🥰🥰🥰🥰
2024-08-08 21:22:23
0
baghdad740
baghdad :
عدكم بالعيادة ابرة اوليديا ابرة اصالة؟؟؟
2024-08-08 22:33:35
0
dykosjg6fina
dykosjg6fina :
❤️❤️❤️❤️
2024-08-09 10:20:51
0
gghgc32
Ali🤍 :
😳😳😳😳😳
2024-08-10 05:06:26
0
metoooo94
Mostafa_ALtaii :
فدوه💗🌹
2024-08-10 20:14:35
0
aliraq715
ابو الشكش :
❤❤❤
2024-08-10 21:07:31
0
anlh2003
hh5960272dz :
دكتورة مسوية نحت
2024-08-11 23:14:55
0
hds224
♥️صباح العماري ♥️ :
❤️❤️❤️❤️❤️❤️❤️❤️
2024-08-13 04:45:23
0
assd44_7
assd44_7 :
🥰❤️👍
2024-08-13 17:07:02
0
user3920392473812
user3920392473812 :
اشگد سعرها العشرة خيوط
2024-08-17 19:41:44
0
user2840382283298
💫~البصراوي ~💫 :
👑👑👑👑👑
2024-08-17 20:42:47
0
user2901334650510
user2901334650510 :
عمي.كافي.ميس.الجبوري.شنوهل.جمال.وخلقه.وشعر.وجسم.عندك.كيمر.سده.هنيه.لكه.متزوجه
2024-08-29 18:46:00
0
adawiasaleh3
Adawia Saleh :
شكد سعر الخيوط
2024-09-23 03:50:23
0
lrakepy
الرجال مواقف :
الله يحفظج
2024-10-16 12:43:39
0
To see more videos from user @dr.maysaljuboori, please go to the Tikwm homepage.

Other Videos

ميسي الأحبه 😭🩶 مهتمة بِ تاي؟ حسابي لكِ🌀. #تصاميم　#taehyung　#تايهيونغ　#v
ميسي الأحبه 😭🩶 مهتمة بِ تاي؟ حسابي لكِ🌀. #تصاميم　#taehyung　#تايهيونغ　#v
Compa moet een uur en tien minuten omrijden in plaats van 20 minuten. Wat zat er op die weg? #compa #krasloten #belgie
Compa moet een uur en tien minuten omrijden in plaats van 20 minuten. Wat zat er op die weg? #compa #krasloten #belgie


In the last video, we explored the parts of a neuron and how they send electrical signals. Now, let’s zoom way in to the neuron’s cell membrane to see the chemistry that makes it all possible. Your neurons are surrounded by a thin, selective barrier: the cell membrane. On either side of this membrane are charged particles called ions: Potassium (K⁺) → positively charged Sodium (Na⁺) → positively charged Chloride (Cl⁻) → negatively charged When a neuron is at rest (not firing), these ions aren’t evenly distributed. There are more sodium (Na⁺) outside the cell than inside and more potassium (K⁺) ions inside the cell than outside. This uneven distribution is maintained by a sodium-potassium pump that uses energy (ATP) to push 3 sodium ions out and 2 potassium ions in. This creates: 1. A chemical gradient → difference in ion concentrations inside vs. outside. 2. An electrical gradient → more positive charges outside than inside. Together, these gradients form the electrochemical gradient, which is crucial for how neurons work. Because the inside of the cell is less positive than the outside, it has a negative resting membrane potential of about -70 millivolts. (That means the inside is 70 mV less positive than the outside.) Fun fact: Ions can’t just wander freely across the membrane. They need special protein channels to move. In the next video, we’ll look at how ions cross the membrane to change this voltage, and how those changes spark an action potential. #Neuroscience #BrainFacts #Neurons #Neurobiology #neurologicallyspeaking
In the last video, we explored the parts of a neuron and how they send electrical signals. Now, let’s zoom way in to the neuron’s cell membrane to see the chemistry that makes it all possible. Your neurons are surrounded by a thin, selective barrier: the cell membrane. On either side of this membrane are charged particles called ions: Potassium (K⁺) → positively charged Sodium (Na⁺) → positively charged Chloride (Cl⁻) → negatively charged When a neuron is at rest (not firing), these ions aren’t evenly distributed. There are more sodium (Na⁺) outside the cell than inside and more potassium (K⁺) ions inside the cell than outside. This uneven distribution is maintained by a sodium-potassium pump that uses energy (ATP) to push 3 sodium ions out and 2 potassium ions in. This creates: 1. A chemical gradient → difference in ion concentrations inside vs. outside. 2. An electrical gradient → more positive charges outside than inside. Together, these gradients form the electrochemical gradient, which is crucial for how neurons work. Because the inside of the cell is less positive than the outside, it has a negative resting membrane potential of about -70 millivolts. (That means the inside is 70 mV less positive than the outside.) Fun fact: Ions can’t just wander freely across the membrane. They need special protein channels to move. In the next video, we’ll look at how ions cross the membrane to change this voltage, and how those changes spark an action potential. #Neuroscience #BrainFacts #Neurons #Neurobiology #neurologicallyspeaking


“so long, darling.” #wanda #vision #edit #marvel
“so long, darling.” #wanda #vision #edit #marvel

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