Heart Disease and Heart Attacks

[oldskhool4eva]

If your mechanically minded then this shit is so logical...95% of people reading this are stumped.

[KingZeno000]

I studied this on my test, and got one answer wrong for spelling "Mfartion".

[donkiko3000]

haha he has angina

[markusheinesen]

please be my biology teacher!

[MonounsaturatedBliss]

so cool... the science that is, not the dying part

[Kimjongil3000]

very good video

[HESHentertainment]

@khanacademy Is the infarction the heart attack or do heart attacks happen after an infarction when the heart is put under excess stress e.g. during exercise?

[Pokiehl007]

@HESHentertainment The infarction itself just means dying tissue. Myocardial infarction is dying heart tissue AKA a heart attack.

[glassbottomboat13]

The Khan Academy is amazing! I love the graphics and the explanations are so clear. Thank you so much!

[jakelmilne]

I'm supposed to me doing Math! Not this. And you call yourself an educator!

[hexzaca]

Can you Make a video on reproduction?

[cherrybalinton]

wow!! i just realized the difference between the heart attack, heart failure and cardiac arrest, w/ simple explanations! thanks!!

[SpoiledLogic]

Great video, Khan!

[chiyerano]

Mmmm, thrombogenic material. I learned a new word today. I am so used to hearing the term thrombosis. Thank you for this.

[valdas0]

What's the yellow part on the heart?

[khaghgoo]

@valdas0 Dead tissue from infarction

[SuperLLL]

@khaghgoo

You sure?Cause I'd have said it was connective tissue

[baburo101]

@ 6:34 where did you think an angina literally came from?

[HoneiiDiiva]

I love medical science so much that I'm pursuing a career in the medical field! This was such an intriguing video on the heart. Thank you, Sal.

[MrDevin666]

Fucking crazy guy right there. Easily could and become a doctor if he wanted, brilliant videos.

[brownmolasses]

very informative...i learnt alot

[Tonio31]

Angina? :-/

[christhecreeper]

MORE BIOLOGY PLEASE

[zsteele11]

Great

[cimadgaline]

can you do more videos on "pulmonary vein stenosis" or rather a video ... especially in infants... please , thank you

[ChrisnStarry]

I hope you are a Teacher. Thanks for your videos.

[TheJoeBargo]

@ChrisnStarry He's more than a teacher! :D

[coolliger]

Great video!

[NephologicaI]

So confusing @_@

[apricotsnms516]

....Excuse my ignorance, but if this can happen to your heart, why can't it happen to anything? Such as a thumb attack? Does plaque not form anywhere else?

[Jrf2112ROBLOXStyle]

@apricotsnms516 Im guessing that these clogs don't form instantly. Most of the blood goes through the heart, so most of the excess fat clings to the side of the arteries, causing it to build up over time. Very little blood goes to the thumb, so it's rare that that will happen. Although, there are attacks on other parts of the bodies. A stroke, for example, is a brain 'attack'.

[superdau]

@apricotsnms516

It does. If it happens in the brain, it can lead to a stroke. It will also happens elsewhere. I don't know if it's called like that in english, but there's something called "smoker's leg" (more generally "peripheral vascular disease"), which can even make amputation of limbs necessary.

[alamroX]

So the question is why only the arteries in the heart have this problems, why not my leg, hand , itc

why only the heart ???

[superdau]

@alamroX

It can happen in other parts of the body, but then it wouldn't be called heart disease anymore ;)

[lesleyhenriquez]

Those arteries clog up if you get old enough.

Diet or genetics just speed it up.

I've seen a guy get an attack at 24.

[stonewall97]

@lesleyhenriquez How is that possible? the guy you mentioned must have been Obese. I'm 31 and i am slightly overweight. So far, no heart problems.

[lesleyhenriquez]

@stonewall97 He was a chainsmoking fatass that hated walking and loved his car.

[TheClairemmable]

You need to make more videos like this!

[gemini88miller]

question: i was always told that a heart attack is similar to cramps that you get in your abdomen from running or working out if your not in shape and whatnot. is this true? 

[rewazilol]

@gemini88miller similar how? it's possible that they would feel similar pain wise, but cramps aren't caused by any of the same problems that cause heart attacks

[walkertexasranger33]

I'm a beast and very healthy. I don't have to worry about this :)

[BYMYSYD]

HNNNNNNG

[Gzorz]

@rectodrn teaching you spelling.

[zoroluva]

Dude! I just felt my heart cower in fear.

[paavohalo]

The artery pointed as LCA in this video is actually the left anterior descending artery (also called LAD) to be presice. LAD is a branch of left coronary artery (LCA). LCA is only a short artery that bifurcates and gives rise to the LAD and so called LCX (left circumflex artery).

[kogumaro]

i love you :D

[Superbighenful]

thank you Khan! Your enthusiasm inspises me learn sсience. So many themes on your channel, so many answers in your videos. Keep up the good work!!!

P.S. I think that it would perfect if will make subtitles on other languages.

[stonewall97]

@Superbighenful Khan will not do that. He knows that English is the superior language. LOL NOOO SUBTITLES. make the non english people translate it themselves.

[42muslimah]

@Superbighenful actually, right now the khan academy folks are working on translating all the videos into tons of different languages. Check out Khanacademy . org :)

[30LayersOfKevlar]

Remember kids, dont shock the flat line !

[mohalfur]

wow