Skeletal Muscle 7- Contraction

Part 2 in a 8 part lecture on SKELETAL MUSCLE in a flipped Human Physiology course taught by Wendy Riggs. CC-BY. Watch the whole lecture (all 8 videos) by going to the PLAYLIST: • Physio 08: Skeletal Mu...

[@aishwaryaiyer1319]

I love how aggressively you taught me this, thank you :)

[@jeffreybrown4228]

Almost 15,000 views and only 108 likes?? C'mon give this lady some credit! Love the enthusiasm! I was falling asleep through all the other videos on youtube until I found this one! Good job! I will be coming back to your videos for other explanations, thanks!

[@DoctorishDiamond]

WOW! I've been struggling trying to synthesize all of the information I've been learning about action potentials and muscle contractions while in medical school. This video is extremely helpful! Thank you so much!!!

[@qazizahor7080]

Wendy, this topic is a very hard one, cz it has many steps involved. I gave up on my book, closed it and hoped Wendy could save me and thats how I landed here. My concepts of this chapter are clear and A1 now cz of you.Lots of love from UK ❤

[@kendsyvincent]

anyone else having trouble with the audio at about 10:21 ? Audio and video seemed to get out of sync :(

[@scoovadia9452]

I literally dont know what I’d do without you! My lecturers need to take notes from you

[@lezard7100]

I am revising this and i have to say ; your video is great ! As was said before your enthusiasm makes us enthusiast as well and your drawings following your explanation really help visualizing and understanding what's happening there. Thank you !!

[@jessicamiralda1927]

Honestly, hands down the best videos I have seen for A&P. Thank you so much for making these !!

[@jillmariemacaluso285]

Just recently found your videos. .I love them and they are sooooo helpful!! Thank you...

[@jeannensantos5900]

AFTER YEARS OF CONFUSION - thank you this was great!

[@hertaklemp1132]

You did shave off about 9 minutes from the last video, but you left out my favorite part: that the sarcoplasmic reticulum is "Calcium Jail!" Love your videos! They are really helping me out in my Physio this semester. : )

[@marissapost91]

thanks! I wrote that down haha

[@angelajabs5747]

acetylcholine is released uhnimunihhuminuh...is that the technical term? literally lol'd! you and I are kindred spirits! i love your videos! thanks for helping me get through A&P in the midst of covid!! rock on!!

[@marissapost91]

You make learning fun! love the energy!

[@ciao_abhi]

This was very entertaining and useful. Love the energy

[@malo3287]

I can't wait for this channel to be the number one social media channel for educating people.

[@hammadharoon4331]

your enthusiasm pumps me...vo hoooooo

[@kannapigaming9186]

Finally I under Stood Thank you

[@kannapigaming9186]

No

[@palacpac09]

These videos are so awesome. Thank you so much. ☺️

[@scoovadia9452]

Please can someone tell me how she records her face and screen simultaneously?? I’d really like to use this method when doing tutoring as it prevents the minds of viewers from slipping away.

[@ahnaf_akif_mbbs_bd_ksa]

ma'am , you taught very well ...

[@maxpla168]

wendy i need help can you please put the neuromuscular junction in order .an action potential reaches the motor axon terminal its an online quiz for class, no matter which order i put it in its wrong ty .acetylocholine binds to acetyhlcholine receptors .the muscle fiber becomes more positively charged .acetylcholine diffuse across the synaptic cleft .an action potential runs alone the entire sarcolemma including the t-tubules .voltage-gated calcium channels opens .calcium ions enter the axon terminal .synaptic vesicles fuse with axon terminal membrane .cations enter the muscle fiber across the endplate membrane .sacrolemma generates an action potential adjacent to the endplate

[@niloufarsharif]

Also this is very helpful during quarantine

[@AuggieX1]

very simply put --- Thank you!

[@sharaa___9259]

You're amazing

[@NameGoesHere341]

so i'm a cj major who decided to take 300 lvl anatomy for some reason, maybe i'm into academic S&M. So i'm a total doofus in class with a bunch of pre-med geniuses (nerds). my wife noted how it almost sounds like you're talking to grade schoolers in this video. i told her i like it because it makes me feel like you made this video for my stupid ass and it gives me hope that i will pass this class.

[@AmitisL]

Very helpful , thank you

[@PleasanceLiddle]

Does anyone know, is it technically incorrect to call what is being called a ”depolarization wave” an ”action potential” or travelling action potential? If so, I'm having trouble understand the difference, is it because while it is still a travelling electrical impulse, only neurons themselves can carry APs so it's just a terminology thing?

[@stephtenne4021]

PleasanceLiddle in the class I am in the we refer to the "depolarization wave" as an end plate potential, or EPP. I understand that it is not an action potential because there is no threshold. The end plate potential actually triggers an ACTION potential, which travels across the sarcolemma and into the T tubules, opening voltage gated calcium channels in the terminal cisternae.

[@pade5]

9:49 I'll admit I did

[@ragazziita]

Love your enthusiasm lol

[@areinn__2949]

8:04 damn i love her hahahahaha

[@lisapadilla4657]

You are so helpful

[@skyler1289]

So does calcium go into the sarcoplasmic reticulum AND goes out?

[@savannahxyz652]

+Skyler Wilson calcium is stored in the sarcoplasmic reticulum; it leaves only to change the conformation of troponin/allow the bare zone to close, then the ions return to the SR after contraction to await another action potential.

[@ThoseNigerianTwins]

Thank you for this seriosuly!! :)Was a major help!

[@angelmathew5534]

You are the best ❤️

[@aaronhittman3718]

I finally got it

[@notanotherpeterzhang7582]

Thank you

[@kenzieisme]

soooooooooo helpful, thank you!

[@niloufarsharif]

You’re SO FUNNY!!! Omg😂😂💜

[@robertstanley9633]

After understanding everything, feels like Im playing a level in Super Mario Bros lol.

[@airamina7293]

Thank you for this!!!!

[@AngelCanxera]

Finally I understand

[@hamzashah1264]

💚💛💜from Pakistan

[@Saki_Ramen]

We all here from physiology are we? 😭

[@zakdavis1255]

Solid illustration. I like the energy, but I found your "wows" and "this is really cool" to be distracting and to take away from the video

[@mckenna8663]

+Zak Davis i love them....I'm actually getting into physiology (and anatomy). In fact, I sit through my boring and confusing professor's lectures at MY college - all the while thinking... "Wendy, save me and explain this crap!!" When she goes off on these videos...I GET it! And then with her enthusiasm? I am hooked.

[@mrRubal100]

+Zak Davis, have you tried other KZbin channels? They are more suitable for you. I guess people who are watching her video's like her "wow's , this is "really cool" dialogues.

[@ciao_abhi]

your opinion is valid but judging by the likes and comments, they fall into the rare minority.

[@kannapigaming9186]

ക്ല

[@tequila_and_bullies3150]

This is painful to watch!!!