HCL Learning | Structure of the Human Heart

HCL Learning DigiSchool presents you animated study material on structure of the Human Heart. It describes the location, structure and function of the human heart, the flow of blood and importance of valves in maintaining the direction of blood flow. The 3-D animation of all inner parts and processes enhances the learning. Click / learninghcl .. to watch more animated stories.

[@kiranjha789]

I fell in love with human body!

[@harshvarddhan]

I love you nissu

[@nawaldina8950]

Do you want to be a doctor when you grown up??

[@harshvarddhan]

@@nawaldina8950 can you help me in my study

[@user-sb7jo4xl3k]

And some stupid people saying that there's no god...

[@jayantbansod400]

@@user-sb7jo4xl3k yes there is no god, actually the answer to the question that does god exist is unknown.... So we can just assume this ot that.... Some believe that god exists while some believe that god doesn't exists

[@arzeminahusovic6270]

AMAZING! Almighty God Allah Suphanallah Weteala created that perfectly.Alhamdulillah! We have to think about thet and to be thankful to Him.

[@monseiuramrrr3150]

AlhamdulillahiRabbil Aalameennn... 🤲

[@vipkhan3863]

@@monseiuramrrr3150 zjdfkd

[@margaretbinns3134]

I’ve watched a lot of videos on KZbin of the Heart but this is one of the best ones to watch . It’s almost as if it’s a real heart in action .

[@amreshyadav2758]

technically its wrong animation. left venticle is actually behind the posterior view...

[@elaineewalt8137]

@@amreshyadav2758 Now I don't know what to believe... 🤔

[@hareriti2463]

Very nice animation but with an significant error as it seems.. The pulmonary and aortic valve do open into the vessels with the pressure and not against the flow of blood..

[@TanTan-ch3vq]

Agree with you

[@victryismin89]

it's frustrating how many of these videos get this basic thing wrong! makes it a lot harder to visualize this stuff when the fundamentals are off.

[@ASIFAHMED-cz9ee]

What an amazing creation of Allah...Suba han Allah 🤲🤲

[@tayyabakhaliq8217]

Indeed .. He's the greatest

[@ASIFAHMED-cz9ee]

Allah is not he or she, Allah has no gender, Allah is Allah the almighty ♥️

[@MoreTrenMoreMen69]

allah is fake

[@manognajoshik8465]

Om namah shivaay

[@MAY-me4dc]

Indeed❤️❤️💖

[@kazimanu8506]

Subhan Allah ❤️ How the almighty Allah create us❤️

[@tomato-v8x]

This is a science video, please keep your religious beliefs away from it

[@tayyabakhaliq8217]

@@tomato-v8x Allah is the Greatest

[@JCreationToons]

@@tayyabakhaliq8217 atchaa

[@sitihamidah6332]

Subhanallah MashaAllah Alhamdulillah, Allah is the creator

[@elita628]

And mohmd created imaginary allah 🙄

[@sitihamidah6332]

@@elita628 Bismillahirrohmanirrohim Alhamdulillahi robbil alamin Allohumma solli ala sayyidina Muhammad waala ali sayyidina Muhammad Innaddina indallahil islam Lamun dinukum waliyadin

[@elita628]

@@sitihamidah6332 abe ye kya hag diya

[@rigelb9025]

Off-topic.

[@errrzaa0]

Made it easy .....to visualise ;) Amazing animation + clean explanation 🔥

[@ultrasmarter3427]

omg its incredible mechanism, master piece of god engineering. HIGH CAPACITY LIFE TIME GUARANTEE BLOOD PUMP

[@ambujtiwari763]

वंश ने

[@guillermodozal7166]

This incredible mechanism was developed by yes, natural selection, and no, no silly fictitious entities were involved.

[@dougreformed8956]

@@guillermodozal7166 the idea that random mutations and natural selection can produce something so complex and wonderful from nothing is fictitious. Not just improbable, but absolutely impossible according to everything we know about the laws of the universe.

[@guillermodozal7166]

@@dougreformed8956, you are woefully uneducated ab what we know. And why? Bec your head has been immersed in religious dogma since you were a kid. We’re in the 21st century, wake up. I did, millions have, but no, not you. You wouldn’t want to disrespect your silly fictitious entity. Read Dawkins’ The Selfish Gene, Harari’s Sapiens, etc. As Immanuel Kant said: dare to know. You: Oh, no, I don’t dare to know as I will surely lose my decades of investment on my well-defined silly beliefs.

[@dougreformed8956]

@Guillermo Dozal 21st century: dumbest year in a long time since france declared itself athiest, enthroned a hooker as a symbol of its "reason" and then just about wiped itself off the map. Learn to think outside the box bro...

[@driss.oumouch2018]

سبحان الله الذي صنع فأبدع ،قال تعالى في كتاب (لقد خلقنا الانسان في أحسن تقويم ) سورة التين

[@turbocharge2512]

Excellent design of heart ❤️ salute to the creator and designer of heart in human and all living animals .

[@shafqatnaz2811]

Correct..And the creator is Allah SWT❤️

[@Biologicalstar]

kzbin.info/www/bejne/q5-anmWJbbR4a5Y&feature=share

[@oneforallah]

The best video out there explaining truly how the heart works and how it all looks like in 3D and at every angle.

[@2028end]

agreed!

[@abdullah_kzm]

سبحان الله العظيم و بحمده 💛

[@khuramkhuram9651]

ALLAH IS TRULY THE GREATEST.

[@reginaldsanut27]

The more I believe of the spirit wisdom of Almighty Father, the perfect scientist of the universe. Perfect computation of heart structure, pressure, thicknesses, pipings, how fluids flows perfectly non stop. A single cell self duplicating that forming into different parts and functions.

[@lipsadutta6655]

Yeah u are absolutely right.

[@divyanshi8533]

SOOO true 👍🏻

[@DineshKumar-nz1ld]

@@lipsadutta6655 q as wE1

[@amedicalstudent3770]

Excuse me , what is the spirit wisdom ?

[@user-ur2en1zq4f]

I believe almighty mother & father Shiv shakti ⚡

[@eagleofnations2259]

سبحان الله خالق هذا الجسم المعقد ، و جعله أية يتعجب منها البشر و دليلا على عظمته و خلقه ، أشهد أن لا إله إلا الله وأن محمدا رسول الله

[@asimsoomro3824]

سبحان الله وبحمده سبحان الله العظيم، ماشاء الله Now who else could make such Beautifully Perfect Mechanism apart from The Lord of the Universe.❤

[@matthewmanawoba1038]

The heart is really the engine of the body; it must be well taken care of

[@beautifulldrawinghardik5291]

This is very helpful video sir

[@leem.5917]

The Brain is more of the engine. The heart is more of a complementary pump

[@huryburly6025]

@@leem.5917 yes the brain

[@arunkumarchaudhary6717]

@@leem.5917 Nope brain is the command like when we will press clutch, acceleration what will happen and heart is the pure engine who pumps the blood like a petrol..... As engine decides the life of a vechile same in the case of heart

[@rajinderdhammi3819]

I gave it to my sweetheart 💕

[@rohitgaikwad1070]

thanks I'm in 12 th this helps me in learning heart topic very very thanks to your team for making this video and best animation in video.😀😀😘😘

[@Eazy920318]

The best video that explains the heart anatomy

[@dawncawthra3519]

Not quite, Helical heart does. It's beautiful!

[@anytimeravindra]

A very good clear quality to the point presentation. Really aspiring!

[@LearningHCL]

+Ravindra Yadav Thank you Mr. Ravindra.

[@CloudCloudVFX]

This was amazing i loved your comment it made me feel wonderful

[@Biologicalstar]

kzbin.info/www/bejne/q5-anmWJbbR4a5Y&feature=share

[@tinkerbaek7744]

its a miracle how organized and intelligently our bodies function, it is wonderful

[@sourabhkumar5696]

Yes human

[@elaineewalt8137]

@@sourabhkumar5696 No, God! 🙏💗

[@zulfikarshk]

what a complex creation , how powerful is the creator who made us... SubhanAllah .. All praise be to Almighty God

[@georgealderson4424]

Amen. Thanks be to God/Allah Blesdings and peace be with you Zulfikar

[@depressedutchman]

Yikes... am I the only one who believes in science and evolution

[@eyadmubarak9936]

@@depressedutchman God creation is the science you study, as human you study and learn how he design things neatly

[@hasibulhasanhasib6147]

​@@depressedutchman Allah is the only creator

[@sameerasukeerthi7558]

Thank u so much sir..... I was struggling to learn the internal structure of heart ..really very informative.

[@Kevin-xb4zv]

sameera sukeerthi You must be a medical student right?

[@hasbanallahu4631]

@Ashton Dalton wht??????!!!!!!

[@niyabinu5934]

@@priyamerry109?

[@cardrivingtv2432]

Nine

[@naidusreemaan5045]

@@Kevin-xb4zv medical books describe heart much beautifully

[@abodabboodd3574]

تبارك الله سبحانه وتعالى أحسن الخالقين والحمد لله رب العالمين

[@sooya4285]

سبحان الله الذي لا إله إلا هو 💖💖💖💖💖

[@kevinstewart3758]

Nice animation (apart from the upside-down semilunar valves as has been pointed out). Another major error is that the chordae tendineae do NOT open and close the AV valves! They provide support to prevent the valves being pushed back up into the atria by the high ventricular pressure.

[@spencermerrick754]

I was just going to comment on the same thing. They just prevent prolapse.

[@jahangirqamar1821]

Kevin Stewart yes ur right sir

[@jesusjustiniano9712]

? I am confused so what opens the tricuspid valve? The chordae tendineae prevents back flow, but what structure or action opens this valve? Just the ventricular contraction? Help please.

[@AkhileshYadav-nn8fm]

Kevin Stewart gutghj

[@floatingchimney]

+Jesus Justiniano Heart valves are not operated by any muscle or structure. They're built in a way that they allow fluid flow in one direction and prevent it in the opposite direction. this is a mechanical concept, not a biological concept per se. They operate on the direction of fluid flow. So they will not resist fluid flow in one direction and the cusps will move under pressure to allow fluid passage, but with the flow of fluid in opposite direction the cusps will close in and form a complete blockage. Defects in valves will cause regurgitation i.e. flow of fluid (blood) in non-physiological direction. Reducing the effectiveness of the heart. Just basic mechanical concepts. Cheers.

[@flyingsquad6463]

Subhaan Allah

[@sakawatullahsakib6720]

SubhanAllah ❤️

[@harshaldeshmukh665]

Thankyou so much foe this masterpiece ❤️, crystal clear concepts now💯✨

[@aliazam7086]

SUBHAN ALLAH ❤️

[@sarahsalsabil6149]

SubhanaAllah

[@behappy6999]

Amazing creation from God

[@thegamingstudio5231]

i am in 10th and this is in ousr syllabus which i was really struggling to focus cause out textbook has rally a lot of words thank you so much

[@elaineewalt8137]

Stay in school and work on your spelling. 👨‍🎓👩‍🎓👍Always remember, knowledge is POWER!!! 💪

[@kavya...]

Amazing explanation...the pictorial representation of heart was really tooo real to see and understood well

[@khaledkhaleeed2017]

سبحان الله. هذا خلق الله ☝️

[@catsdotcom245]

Imagine him who has created this unbelievable creation ❤️

[@madhusudana3827]

That is the power of subconscious mind..

[@tomato-v8x]

This is a science video, please keep your religious beliefs away from it

[@catsdotcom245]

@@tomato-v8x U r lucky that I am giving u reply after 9 months. Again ,I won't have to learn Science from u cause I am a student of Science background. Every elements are created by Almighty God that all religion say . Don't blame someone because of his/ her religion. Ur mentality is actually full of trash

[@user-oc4hu4fh3l]

The best video so farr... Highly recommandle to class 11th (pcb/pcmb) students.. To know the cardiac cycle (Body fluids and circulation chapter)..

[@ArifBillahOnGoogle]

"...then We developed him into another creation. So blessed is Allāh, the best of creators." - 23:14 Al Quran

[@henryrobins6064]

These videos give me so much life. After watching these, I honestly understood the essential facts about this topic. I am interested, though, on how do you make these educational videos? what computer program/coding language did you use and how long did it take you? Thank you so much!!

[@LearningHCL]

+Henry Robins Thank you Henry. We have a big in-house team & they develop the same post research.

[@DoNotChooseBlank]

@@LearningHCL bruh sussy baka

[@moominamoosa8554]

Aaaaq

[@DoNotChooseBlank]

@@jonnstride1214 now delete your comment

[@cardrivingtv2432]

Nine

[@jhongcabanela7823]

Amazing heart,the Creator is so brilliant,Thank you Lord!

[@benitaesq_]

Amen

[@MODEST500]

Ameen

[@unknowuser9821]

Allah is truly the Greatest.

[@dr_hatem8615]

سبحان الخالق المبدع

[@ananya551]

This is the best animation I have ever seen and also I was getting some trouble while studying human heart this made it super easy thanku😇

[@shafiahmed1127]

Wonderful video about heart As a Muslim we call heart is everything heart is Allah God

[@waqarKhan-xk6fp]

MashaAllah subhanAllah

[@totaa46]

Subhan Allah Alazim, Allah the greatest creator and did a magic job in us .Subhan Allah w behamdih 🩵🩵🩵🩵

[@FrumSepharadi]

Praise the Lord Yah! The heart is HIS CREATION!

[@syedmahmoodali86]

Subhan Allah.... God is perfect Glory to Lord who created everything perfect and in measured way...

[@tusharmaharana3373]

It is pure randomness that created all this.

[@depressedutchman]

@@tusharmaharana3373 or so called evolution

[@tusharmaharana3373]

@@depressedutchman It is even deeper than evolution

[@depressedutchman]

@@tusharmaharana3373 true. It was all random But eventually when the first homosapien accidentally where made, evolution brought us here But you are right... it was all random Because of a STUPID FISH that decided to walk, and now I have a student debt 😑 thankyou fish

[@pdcetview]

You see heart, I see creation of Allah. Thanks for this video

[@madhusudana3827]

Shut your mouth.. Don't bring here That rapist alla.. It is pure nature creation...

[@amchich]

.. by looking at these four tiny thin ceaseless membranes .. I realize that our lives are hanging on by a very thin thread .. It's quite an ingenious system ..

[@blancaestelachavezchavez4389]

Its true.

[@user-wq7tz2eo8n]

В голове не укладывается! Каким же Творцом надо быть, что бы сотворить все живое.

[@XPAHUTEJlb_]

Обычный электроклапан ,гарантийное использование 50-70лет.

[@elaineewalt8137]

One beyond our own power and understanding. 🙏

[@AbdulWahid-br3qv]

Thank you Almighty Allah for gifting us heart.

[@Lilaznlb5]

Two thumbs up... has me yearning to learn more. So incredible, our heart.

[@adarshmishra7525]

Saw this in school. Its nostalgic to see this now

[@shree_this_side]

Thanks a lot for this video....it really helped me to understand the structure of heart...thanks a lot❤❤

[@yusufanna3410]

Look at the creation .... Again and again look at it... Think of the CREATOR... human the best of creation Think and Thank the CREATOR

[@SALIMShaikh-in7re]

Thanks a lot sir its really helpful for us I am NEET aspirant and I was searching the easy way to understand the internal working of heart 😊😊😊😊and bcz of u its possible to learn in such a easy and better way thanks a lot sir 😇😇😇😇😇😇😇😇😇😇😇😇😇😇😇😇😇

[@uzairmanzoor7391]

Subhan Allah

[@kavyaacademy5229]

Fantastic Creation 🙏🏻🙏🏻🙏🏻🥰🥰

[@robmandel9963]

The aortic and pulmonic valves are both backwards. They do not open into the ventricles to "suck in" the blood. They open into the pulmonary trunk and aorta

[@rodrigonahumalvarezferreir6287]

The animation is really beautiful. However, it is not accurate with the reality. The aortic and pulmonary valves open to the opposite side than what is shown here. It is also not shown here the isometric contractions, which are the sole causes of the first beat sound. Maybe I'm just being too critical, but if this animation had this issues fixed, it would definitely be the best one ever. Oh yeah, and I forgot about a third error: the chordae tendinae do not open the atrioventricular valves, but they prevent them from going inwards too much during the ventricular contraction. Well... :(

[@myleetudors7087]

I Absolutely LOVE how the beating heart sounds,I find it so SATISFYING. Am I the only one?

[@5injl]

You're not alone... It's really calming!

[@myleetudors7087]

Steezy Hanof IKR! I could go to sleep listening to it!

[@guillermodozal7166]

@@myleetudors7087 I’m sure you mean feeling it. I do the same, also feeling the impact on the knuckles as I’m falling asleep.

[@farhadhasan829]

This is the best shortest teachable video i have ever seen. Just fascinating.

[@AhmedKhan-rd7yv]

سبحان اللّٰہ الحمدللہ اللّٰہ اکبر صلی اللّٰہ علیہ وسلم 🌹🌹🌹

[@pradipupreti7392]

A great effort to make it easy to understand the systems. Thank you so much

[@Biologicalstar]

kzbin.info/www/bejne/q5-anmWJbbR4a5Y&feature=share

[@ritikashukla2223]

Thank u so much sir this video is really helpful for me ☺️☺️☺️

[@Biologicalstar]

kzbin.info/www/bejne/q5-anmWJbbR4a5Y&feature=share

[@ksumar]

♥ remarkable organ, which never tires in its lifetime 👌

[@fishythenothosaurus5938]

Tottaly loves pain, isn,t it. Loves it so much, so never stops.

[@opsoban9619]

U cleared my concepts in 2 mins thanks 🙏

[@alwaysstudybasictipswithin4432]

Everything has created Allah ❤❤❤❤infinity.

[@kajutokirrito358]

Bruhhhhh, fix your damned grammar pls. It is, "Everything has been created by Allah". What are you even talking about

[@irfan_updates]

Ma sha Allah ❣️

[@glhe7061]

ຄ

[@azadsherfudeen2879]

ALLAH AZZAVAJALLAH....SUBAHANALLAH.HEART BLOOD PUMPING MACHINE IS ONE YOUR BEST GIFT FOR US..YA ALLSH PLEASE FORGIVE US..

[@ChadSingh1]

Great explanation Concept cleared ✅thank you 😊

[@AsadRafi-ng1oj]

Beshak Allah is the creator of this

[@skumarsahoo4233]

Hindu Dharm Ka naam suna hai 😂😂😂😂

[@IJJ_MM]

​@@skumarsahoo4233🤫🤐

[@ErnoFarkas-h4e]

Allah wouldn't create human ai did the latina fuckers🎉

[@vasanaanagarajan]

Nope it is shivan

[@HaD145]

Shut the f*ck up, keep your fairy tales to yourself

[@user-ov7mg3be9r]

Прекрасное видео,жаль,что нет перевода на русском языке

[@petya7105]

Включите субтитры (cc) под видео и выберите русский. Переводит довольно хорошо автоматически.

[@Biologicalstar]

kzbin.info/www/bejne/q5-anmWJbbR4a5Y&feature=share

[@methasawijayasuriya6472]

The best video about structure and function of human heart 👍

[@pandubujji2877]

Wonderfull God creation

[@sauravpandey7459]

Thanku soo much 🙏🙏 for such a detailed and beautiful explanation of this topic.

[@Biologicalstar]

kzbin.info/www/bejne/q5-anmWJbbR4a5Y&feature=share

[@ch-ec3qw]

this is great, thank you. I'm not sure, but aren't the pulmonary valve and the aortic valve supposed to face the opposite way?

[@tserendashotgoo2596]

yeap, definately mistake by animator

[@jonnstride1214]

@@tserendashotgoo2596No,they are same as shown in animation.The pressure is enough to sent this to upper valve.

[@shazmonanurag]

വാക്കുകളില്ല ഈ മെക്കാനിസം ഡിസൈൻ ചെയ്ത തമ്പുരാൻ്റെ അമാനുഷികത...❤️❤️❤️

[@user-nk8fq1eb4e]

Аллах Велик и эволюция не причем! Все вокруг создано искусственно.

[@rakeshnayana3212]

Thank you This help me a lot

[@Vikash__1998]

जो भी अपनी प्यारी 👁️आंखो से मेरा 💬कमेंट पढ़ रहा / रही है 🙏भगवान उसके 👌 माता पिता को सलामत रखना

[@zaynubbinteishaq1603]

Maa SHAA ALLAH. Subhaan Teri qudrat

[@deepseacocoon]

Easily best video showcasing this on KZbin

[@OscarRamirez-gt8jg]

Beautiful!! Which program did you use for the animation?

[@mohammadayub2760]

Glory be to Allah who created the most important organ in my body subhaanallah tery quadrat only Allah knows he is the master of All designers brilliant is Allah magnificent is Allah ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️

[@ishasheikh9300]

Indeed

[@swadhinn]

@ViDeoHane "Everything Comes From Something, Except The God!!!" Simple 🙂

[@swadhinn]

@ViDeoHane Neither We Can Prove Anythng Wrong Nor Right, So We Have To Believe 🙂

[@pinksheepx1643]

@ViDeoHane Allah has no beginning. (n no end ofc) No one created Him. And yes this is mind blowing for us human.

[@AsifAli-ls1bs]

@ViDeoHane No one has created Allah . Allah has created everything becz if someone creat the other that would be a creature not creator .Allah is the creator

[@MedicalLecturesMnemonics]

Great 3D animation of heart👌

[@drizzle786]

Great blessings of. Allah almighty indeed

[@pyarapyarajan5493]

Mashallah ❤️

[@dhivyas1796]

Thanks for your clearful video

[@user-zu2sm9rs2p]

Great and best video!! I now understand my Anatomy and physiology classes and hope to get good grades this time!

[@guillermodozal7166]

A very interesting thing in the heart that was not touched upon. The electrical impulses traveling in the perkinje nerve fibers within the ventricular septum, begin to activate muscle tissue when it reaches the bottom of the heart, the apex. The muscle tissue at the bottom is the tissue that starts to contract first. As the nerve impulses continue to travel up within the walls of the ventricles, muscle tissue is being activated. The beauty of this anatomical arrangement is that the ventricles eject their blood contents, not all of a sudden, but in a calm, wavy motion. If you do a semi closed fist with your left hand, place it in front of the heart, now bring in the pinky to the palm, then the ring, then the middle and finally the index, you get a smooth transition wave motion that enhances the gentle passage of the blood from one anatomical structure onto another, the aorta. Not only that, the wavy muscle motion of systole is aimed directly at the aortic valve opening; incredible beauty. The heart says to the aorta: I did my job very well, hope you do yours well, too. The heart better work this well, after all, nowadays he needs to do his job for at least 79 years. For me that’s three more.

[@elaineewalt8137]

That was quite an intelligent post. Thank you for your knowledge and sharing this w/us! May the Lord Bless you w/many more Birthdays, Sir! 💗👨‍🎓👍💪🙏🎂

[@venkannapujar1729]

This is very clear explane to the students.

[@ksawebdeveloper-3671]

God is the greatest. Wow god made everything perfect

[@ItzPM]

Do you have any proof that God made us? Because my biology teacher/Google/ KZbin never told me that body is made by God

[@xesusme2227]

@@ItzPM Do you have any proof that God didn't exist ? Do you have common sense or Do you even exist ? Because my biology teacher/Google/KZbin had never told me that you exist & you have common sense & whether you're Male (or) Female. Your statement shows that you just follow what Google/KZbin/Biology teacher has told you.Go where they're going. Galatians 6: 7 ----***{Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap.}***

[@xesusme2227]

@تلاوات القران - Tilawat Al-Quran Then whats right ?

[@depressedutchman]

@@xesusme2227 you don't have proof a God exist... we don't have proof that it doesn't. So God is a thing that nobody is sure off. I believe in science as that can be fact checked and not read from a book from 2000 years ago God didn't made us... thousands of years of evolution made us what we are now. Improving and improving

[@xesusme2227]

@@depressedutchman Aha! Evolution , fact-checked , improving and improving . So many wise words , boy. Dont think you're wise and intelligent. God is not a mere foolish man.He is the Almighty. You're not challenging me but actually quesioning God.

[@user-ke2cz7ys1w]

Аллах велик.Альхамдулиллах.

[@dr.fatematuz-zahura3411]

Amazing. Thanks for the excellent job.

[@rajanlubana336]

Nice animation

[@shreyanair253]

awsome explaination n very informative but.... the audio can be more clear n loud

[@nitusingh4064]

Hello how are you

[@user-pz3gd4wr1z]

سبحانك اللهم وبحمدك أشهد أن لا إله إلا أنت خلقتني وأنا عبدك وأنا على عهدك و وعدك ما استطعت ان أشهد أن لا إله إلا الله محمد رسول الله صلى الله عليه وسلم

[@perumalnadar8321]

Very great technology which can not be even copied by human being 👍

[@WideOpenChange]

cool voice

[@bmb990]

Как двигатель работает наш сердце ❤️❤️❤️

[@eltrah0]

Да круто, только сердце совсем не так работает)

[@subhayansom3001]

the explanation is very good

[@almodaferamir2181]

Greatly appreciate for such useful video