Layers of the heart | Human anatomy and physiology | Health & Medicine | Khan Academy

[@Character994]

The structure that he labeled as pericardium is actually only a part of it, called the serous pericardium. There is one more layer of dense connective tissue on the outside, called the fibrous pericardium that has been omitted. Please upvote and/or comment to this so that others can see it.

[@dryoutube]

Pericardial fluid sits between fibrous (externa) and parietal pericardium kzbin.info/www/bejne/pJXdaqqLfbNgfZo

[@marjansunanijournal]

Yess u r right!!

[@tarabaker9619]

Yes, also known as epicardium. Which would be more helpful to label since epi means outer most.

[@flarefiragax]

This video is so much clearer than the lecture given by the professors at my university. They try to sound overly formal, which only gets in the way of what they're trying to communicate. Thank you so much!

[@alokak8677]

Thank u..! But there is two type of pericardium they are 1_fibrous pericardium (which contain strong fibrous ) and the second one is a 2_serous pericardium (the inner portion of pericardium which composed two layers A_visceral layer (which contact with myocardium ) B_parietal layer (which contact with fibrous pericardium ).

[@صقروايل-ر5ش]

Aloka K exacllty I wrote then notice ur comment 😂

[@luckyrocket42]

I just hit a gold mine finding your channel. You will help me conquer my human anatomy course. Thank you!

[@khanacademymedicine]

Great question. This can result in a valve that doesn't work properly and flops back and forth instead of providing a good seal. Blood can go the wrong way in this situation and lead to less efficient pumping of blood to the body.

[@lindasoto8280]

i can not say it enough! your channel has changed my life! you helped conquer physiology and now my anatomy class!

[@karamjeet4591]

Rishi, you are a gifted teacher. Are you considering more advanced medical presentations for those of us with the background already?

[@KitaKatt1988]

🙌🏼🙌🏼🙌🏼

[@Merryyy203]

I am a Spaniard going to school in Germany to become a nurse and you have no idea how much your videos are helping me. I get so lost in translation while in class sometimes... THANK YOU!

[@khanacademymedicine]

Yes, they are the same thing. Mitral valve = Bicuspid valve.

[@dammifalestina9097]

This video is Sooo helpful 🙏

[@emschic75]

Excellent video!! I think all Khan Academy videos are great!! They are getting me through A&P!! Thank You

[@andresaliba4655]

"and in that gap, you might have A LITTLE BIT OF FLUID." rip headphones users

[@hansmorales4802]

Lol i got so scared

[@riyaz1241]

Hello, I noticed at time (7:16-7:20), right after you finished talking about the endocardium layer, you mentioned that you go deeper into the myocardium. I think that was a mistake. From superficial to deep, the tissues should go as follows: Pericardium, Myocardium, and Endocardium. Therefore, myocardium is NOT deeper than endocardium; it is more superficial.

[@nabilbelabbes5013]

yes i notice that

[@Meekionine]

Can we all take a moment to be wow'd at his writing skills with his mouse?! I don't know about you people, but my mouse writing is not nearly that legible :P

[@talhamujahed4946]

Ruth,they use screencast o matic,sketchbook,wacom intuos

[@RianKashfi]

He's not using a mouse lol he's using a tablet with a stylus pen.

[@natashajarrett527]

Good way of teaching..I understand better now...

[@jamaicancollegegirl]

DO YOU OFFER A SUMMARY OF WHAT IS SAID IN THE VIDEO? THAT WOULD be great. please

[@yvetteamandacastro259]

Thank you for doing these videos. They help me in better understanding the heart.

[@jacklinepadilla2071]

wow I am a nursing student and I am enjoying all these videos!!! Amazing learning tool!

[@Geoblek1]

this week all am doing is watching all your 10 circulatory system videos, u re that good

[@lyndsayvines3349]

Aw man this makes so much more sense now! Thank you!

[@zandilemaphanga8982]

Just had my herbalife liftoff energy drink and I'm not sleepy, I just remembered my favorite subscription to keep me busy😊thank you, your videos are the best👌

[@ejazkhanak47]

Thank you!

[@blairbee3579]

KHAn academy for the WIN!

[@Killshot420]

This all makes sense to me now. Thank you!

[@abbyn9294]

Thank you so much for this video. You explained the layers of the heart and the intraventicular septum better than my teacher. Thanks

[@Sasha-gs5jm]

Thank you thank you thank you.!!!!!!!... great video!

[@amiyaroy96]

Hi thanks for your videos they re so useful :) ..I have a question is the mitral valve,the sae as the bicuspid valve if not what does that do? thanks

[@Cclunda]

Khan Academy RULES!

[@0jarin913]

woooah sal i pretty watch this video forever in this life

[@sclarezz2884]

Correct me if I am wrong, but isn't their a serous membrane known as the epicardium that surrounds the innermost layer of the pericardium, I am eleven years old and read this in a book and I am thinking this is correct

[@feylocu5473]

i need to learn this so thank you

[@alvinashable]

very helpfull! thank you

[@ihsanullah7426]

Thanks

[@mikey51951]

You're amazing at explaining

[@herleenpabla]

What about fibrous pericardium? Is it another layer outside the parietal pericardium?

[@chuckmaddox6725]

yes, you are correct

[@Akhbarkoo]

عاااااش♥️

[@nikolasmartinez5152]

How thick is each layer? Is it on a cellular level because I remember hearing you say the red blood cells bump the endocardium.

[@farhangamoranao9505]

i have one question what you call the barrier in the center of the heart?

[@phdan123]

My bad. Still, they're not called the semilunar valves. We just refer to them at the left and right AV, so sometimes I fuck up the naming

[@mikirayner]

Pulmonary Vein?

[@emilymiller4844]

well done, thank you!! :)

[@Cjewolfy]

Hi so may I ask what is the difference between endocardium and visceral pericardium?

[@noakrale2291]

life saver

[@ahmedelmarhomy7421]

Nice and Helpful ...... Thank you

[@radwanabu-issa4350]

there is no such balloon, the epicardium "Visceral pericardium" is a different structure from the pericardium "parietal pericardium", the epicardium forms from the splanchnic mesoderm of the sinus venosus (not from Spetum Trasversum) where the pericardium is formed, instead, from the pleural (peritoneal) membrane!

[@Tex_Arcana]

heads up, at 8:53 it gets suddenly louder for a second

[@zakaryedib08]

Is there a name given to this, and what's the typical prognosis?

[@sorayaaskari9171]

❤

[@صقروايل-ر5ش]

epicardium then pericardium which consist of two layer

[@sambeard1355]

I love you

[@MrPuukjeens]

Is not in ventriculus dextra three papillares muscles?

[@mikenissim91]

Isn't there a layer called the the Epi - Cardium?

[@ydalangin]

Oh you forgot the fibrous pericardium, the outermost layer.

[@manumalhotra5144]

Yonna Dalangin nope watch the whole video

[@mohammadalfityani6210]

The time i broke my headphones: 8:45 And in that gap you might have A LITTLE BIT OF FLUID

[@fizahkhan9220]

(y) thank u ^-^

[@otamasandoicchi]

and in that gap you MIGHT HAVE A LITTLE BIT OF FLUID!!!!!!..but it, uh

[@TrostUA]

An ear rape at 8:52 plz fix.

[@عبدهماهر-ه9ش]

Want arabic traslation please???????????????????????!!!!!!!!???????????!!!???

[@ecney940]

is he Elon musk

[@lowlalve43]

why aren't u my teacher??

[@yasmineyasmine3520]

U r the best thing that happened to my life thanks

[@FaithfulOfBrigantia]

And in that gap, you might have *A LITTLE BIT OF FLUID* but its not actually cells.

[@AmandaDela]

Woooa..... Thank u . But i was hoping a little bit advanced explanation

[@ankitkumarmahato5785]

What is the function of pericadium

[@Magiccat179]

You are a LIFE SAVER! I have the worst A&P II professor in the entire world. You explain so clearly. Where have you been all my life?

[@bryanwebb688]

Love this guy! He makes A & P so much easier! I've learned so much from him while I work on my nursing degree. Thank you Khan guy (with the deep voice)!

[@musheeramohammed2596]

thank you i really really thank you from the deep of my heart .... you do know how much this vedio help me out...... we really appreciate what you are doing....

[@phdan123]

Nope, the mitral valves are between the atria and ventricles. The semilunar valves (there are two) separate the right ventricle and pulmonary artery, and the left ventricle and aorta. Hope this helps

[@medicalscience1528]

Thankkk youuu. Soo the sac around heart is actually part of heart layers !!! Omg I have been thinking whole time that that sac is around the whole heart and heart enclosed in between....

[@SamIospa]

this isnt correct- there is one mitral/bicuspid valve and one tricuspid valve - exactly as he says in the video and exactly like the comment to which you responded.

[@farrinhinds358]

Thank you best explanation EVER !!!!!!!

[@libertyor556]

Rishi is easily the best Khan Academy instructor

[@opeyemipraiseoluwole2545]

Thank you so much khan academy..u are the best

[@PhillipeNover]

I'm watching all of your video for my RCIS exam in two weeks. You have the best video on KZbin!

[@SC-or2zb]

I won't forget that there is a little bit of fluid.

[@princesszm]

No... Atrio-Ventricular valves = Tricuspid and Bicuspid (a.k.a Mitral) Valves Semi-Lunar valves = Pulmonary and Aortic Valves

[@lisaharrison9111]

Nursing Student...question... Cardiac Tamponade...does the blood fill in the gap of the Perimetrium? Thx Khan...I used your videos for Chemistry 101 also.

[@ryanholding6167]

So is it possible for the Cordae Tendinae to break? And if so, if the blood flow goes the wrong directions, then what would happen?

[@famerlylove6061]

Thank you so much! I am a paramedic student and was wondering if you have a video on simplifying EKG's. You are a great teacher and really thank you for taking your time to post these!

[@baigsadiya8841]

Thanks genius man

[@pusheen425]

godsend

[@sarahtariq89]

hi could you please make a lecture on arrhythmias and the different types

[@zahraa-ls8ny]

thank you

[@thurayah.2295]

Thank u 🌸👍

[@factthings9964]

Kindly request to you do you make your videos on animation.

[@avriluchizlavigne]

This is a great explanation! Greetings from Mexico, man!

[@HeleneStaley]

I like this video. Great presentation.

[@orlacullen7885]

really good at explaining !thanks !

[@mayakatanchi1191]

Great explanation,, Thank You

[@Czar87six]

thanks for this it helped

[@jpjpjpjpx]

"Don't screw up the valves"

[@rich_something]

perfect explaination

[@HaxorHassan]

Mitral Regurgitation

[@SainathKrishnamurthy]

Thank You, Rishi.

[@rz3718]

Standing ovation!

[@Codidicus]

The paricardial sac that I have heard of before is just in between the two layers of the pericardium?

[@LFindable]

Codidicus pericardial sac is the pericardium, therefore contains both visceral and parietal layer

[@hassanjan2194]

pericardial cavity is between two layers of serous pericardium..