In the car. In the shower. While I brush my teeth. Your voice is all I hear.
@AKLECTURES
7 жыл бұрын
@coconutwater9122
4 жыл бұрын
awkward...
@evegmz391
3 жыл бұрын
I’m reading and I hear his voice. Lmao 😆
@christinashamrock200
4 жыл бұрын
Thank you so much for taking time to create these comprehensive videos. I love how you repeat things for a quicker learning.
@noeliaeliashidalgo8923
6 жыл бұрын
You are amazing. I have watched you (your videos) so much in the last couple years I almost feel like I know you! I don't know what I would do without you, Thanks for the hard work!
@System9down
3 жыл бұрын
You've been saving my first year at brazilian MedSchool. Thx a lot! Hugs from Brazil.
@anvayaiyer5614
3 жыл бұрын
Just want to thank you from the bottom of my heart for this. Really appreciate your efforts. You have made biology so much more easier for me. Love you
@tessblake3469
8 жыл бұрын
Thank you for this! Your videos have been very helpful when studying for my A&P exams.
@josettetatiana294
4 жыл бұрын
Thanks to KZitem which made it possible to have you here 😊You make my studies more easy and enjoyable. God bless you
@bikusharma4594
6 жыл бұрын
Thnk u so much ur lecture makes my doubt clear. I like ur style of giving lecture to us.
@jhondelv8891
7 жыл бұрын
This how they teach action potential at the medical school
@rawanmhawe4145
3 жыл бұрын
I cannot thank you enough! Bless you!
@discordant8543
7 жыл бұрын
My course states the threshold potential is at -55, but I've noticed a lot of different values, ranging from -60 to -40, is there a correct answer, or is it variable?
@wahajriaz7594
6 жыл бұрын
Thank you.It was really helpful for me
@michellechristian7406
8 жыл бұрын
First off, thank you for all your efforts and willingness to share your time and talents. I'm still not quite clear on how the return to resting membrane potential occurs after hyperpolarization. Many sources cite the Na+/K+ pump. This is confusing to me because if 3 positive ions (Na+) are leaving the -90mV cell and 2 positive ions (K+) enter the cell than in my mind the ICF would still have a negative defect in relation to the ECF. Now, we know that K+ is 25-30 times more permeable to the membrane than Na+ is...so is the return to resting potential (-70mV) achieved by lots of K+ crossing the membrane into the cell via leak channels?
@discordant8543
7 жыл бұрын
Michelle Christian Yes, after the hyperpolarization caused by the opening of voltage gated potassium channels is finished, we return to the resting potential via passive potassium leak channels.
@studentxcmu
6 жыл бұрын
Thank you!
@andrewbrooks4669
10 ай бұрын
I'm unclear whether the voltage gated potassium channels open on a delayed timer from the -45mV threshold or if they are gated to open at +45mV. Along the same lines, do the sodium channels close after ~1ms or after the membrane potential reaches +45mV? I guess I'm just confused on whether these inactivations are based on time or voltage.
@vicket4
Жыл бұрын
Because of your videos I have a masters degree in biology
@khushbumistry905
6 жыл бұрын
Ah, this helped me so much!! I just have one quick question: are the K+ ion channels open during almost the entire cycle (except for when they are blocked towards the end)?
@shadenyakoub671
4 жыл бұрын
probably too late to answer, but the answer is yes
@anvayaiyer5614
3 жыл бұрын
@@shadenyakoub671 Thanks. That helped me though
@anvayaiyer5614
3 жыл бұрын
@@shadenyakoub671 Also, can you tell me what those "balls" he kept referring to are actually called?
@thinlesdorjay1253
5 жыл бұрын
nicely explained👍👍
@maryamsamer8836
6 жыл бұрын
Your voice ❤️❤️❤️
@AC-qo8oq
6 жыл бұрын
You rock!
@ccgroeschen
3 жыл бұрын
THANK YOU
@pannyvet92
3 жыл бұрын
i have a fiancée, I live with him, I truly love him but still I would marry YOU ahah you are the savior of my exams, you defeat my doubts and make me less stressed because I can understand everything
@extremeblackpill3832
2 жыл бұрын
Would You Marry Baldies?
@ashleyhuber1610
8 жыл бұрын
Why does potassium, a cation, carry negative voltage?
@discordant8543
7 жыл бұрын
Ashley Hileman Voltage is a relative quantity, you can't talk about it without talking about distance, Voltage is the potential difference between two points. There are more sodium ions on the outside than there are potassium ions on the inside, so it's not equivalent; since the intracellular concentration is less than extracellular, we say it's negative. At least that's how I understand it. For example, we'll say there are just sodium and potassium ions, potassium inside, sodium outside. Say there are 65 sodium ions to 45 potassium ions, if our ground is extracellular, the Voltage across the membrane is -20 mv. If you close that gap and create equilibrium, there is no voltage because there's no concentration gradient. I hope that helps.
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