Why are human bodies asymmetrical? - Leo Q. Wan 

what is the guy from pink panther doing here

I read : "Why is the Asymme Human body trical?" :D

0:37 Human body is symmetrical from the outside. Me: But my eyebrows aren't.

I had an uncle with reversed organs. Lived to his late seventies with zero complications.

Where are mathematicians burried? The symmetry

0:38 It might look pretty symmetrical at a first glance, but take a picture of one side of your face or body, flip one and overlay them, you will find out just how different they are. We use our facial muscles and our body's organs very differently on each side, resolting in major differences (and of course, some differences we are simply born with). It's actually kinda weird when you think about it. Since looking at a reflection shows us an inverted image of ourselves, we actually never see ourselves the way others do (unless we're looking at a flipped picture of ourselves).

As an artist, I know the beauty in both symmetry and asymmetry.

My face is symmetical... both parts are ugly :D

Situs inversus must mke surgeons concentrate a whole lot more.

Uneven eyelids........ +_+"

2:53 the guy is like, "holy shit I was just a pig"

asymmetry is beautiful as well

I stared at the thumbnail for 5 min trying to figure out what "why is the asymme human body trical"

My left eyelid is closed more than the right and the left half of my mouth doesn't open as much. It looks like I had a stroke

_"Symmetry is beauty. Asymmetry is perfection."_

I'm a Symmetrophiliac and when I see anything asymmetrical I think of it all day, sometimes if it's something in my house, I can't sleep cause of it and just go to fix it then and there or tommorow.

Keep up the good work Ted-Ed!!!

I have wondered this for so long. Thank you.

I can fit my left glove on my right hand, just have to put it on backwards.

This is my favorite narrator on this channel, he should do more

Do more riddles! They are very fun to watch!

Who read the thumbnail like that "Why is the asymme human body trical"

Models are usually chosen for their symmetry. Here’s a revealing little thing to do. Take a selfie and make copies; halve the images; take say 2 left halves and flip one of them over then fit them together. Then repeat for the right side images. You should now have 3 facial images: one of how your face would be if you were left side symmetrical, one for the right side and an original of what you actually are. The results can be quite horrendous.

인간의 중요기관들이 왜 비대칭으로 만들어지는지 알아보는 재미있는 시간이 되었습니다. 정말 재미있고 뜻깊은 시간이 되었습니다. 감사합니다. 언제나 응원합니다.

I've always wondered about this, but nobody has ever given me a good explanation until now. Excellent video.

The last line were so great

Keep up the good work !!

this video is so delightful! My insides are tingling :)

Nice video! However, I did expect a deeper answer. So, the cilia in the embryo pushes fluid to one side and stimulates different genes. But why does it do that? What is the meaning or value of being asymmetrical? Especially for our external appearance: parallel organs with the same function look slightly different (eyes, ears, hands, etc - not considering the fact that they are 'flipped'); central organs have one half different than the other (nose, mouth and so on). I don't know much about biology, but if our DNA has the 'programming' for our body parts why don't identical feet happen? Not that I'd want that though, just curious about these questions. :)

3:08 I guess he was hungry and couldn't resist XD

great job

Thank you ❤❤

I dont know why, but seeing the lung with three lobes gave me chills 😨😓

I always wonderd that i was askin everyone for 6 years and now i found this video thank you 😘

These are perfect for bedtime because they keep me thinking as I drift to sleep what a good way to sleep

Intro sound seems much louder than the context audio

I love this one

Ted-Ed = everything I NEEDED to learn in school

Technically everything is asymmetrical and nothing is perfect.

great animation on this one. reminds me of those old pink panther cartoons, and several other animations from the 60s.

I read the thumbnail as, "Why is the asymme human body trical?" and I was so confused for a few seconds. I should really start having a good amount of sleep everyday.

I remember when my biology teacher told me humans were symmetrical. I was so confused.

2:54 that "probably" sounded like something a text reader app would say.

Aw I was hoping for a bit more.

But why are leaves symmetrical then?

Onde estão as legendas em português? Vocês sempre tem :(

Appreciation of asymmetry reminds me of the lessons of Wabi-Sabi "Appreciating Imperfection"

I didnt know asymme human bodies could get trical, thanks Ted-Ed!

no one: my face: 👁️ 👁️ 👃 👄

I've always wondered why the subclavian arteries from the aortic arch are so different from each other. Multiple professionals have been unable to tell me why.

The ending Wave of Kanagawa reference though. :D

The thing tripping me up the most at the start here is the lungs having a different structure. Here I thought a pair of lungs was the prime example of symmetry but, wow,

Amazing

And just a Kanagawa wave to top it all off yeah love it!

Hi No pun intended

last phrase though... it is fancifully written well with adjectives

Just curious: might any of this have to do with the asymmetry of chiral compounds in the body: of an L- and a D- version?

ขอบคุณครับ สำหรับการบรรยายไทย

ty :)

this is how not why...

Wonderful! I learnt two new terms today!

What about external asymmetry? Because most people have one boob, foot, hand, etc. that are bigger than the other, and sometimes even more differences. Like my whole left side pretty much is bigger than my right. Even my left leg is slightly longer than my right. My left arm is stronger than my right, despite being right handed, my left boob is a whole cup size bigger than my right, etc. My mother has one ear that's a full centimeter higher than the other, she'd always warp her sunglasses so they'd sit straight on her face. What about stuff like that?

My theory is that, while symmetry has its own merits, for example, most animals are "two-sided" because of the necessity of sensing direction and movement; like stereo speakers, ears, nose, eyes gather external information in separate directions to form a cohesive data of the environment. Movement; I'll leave that to biomechanics, but most vertebrae are "two-sided" for movement. However, with all these merits from symmetry, vital parts, which are of higher importance like digestive organs simply do not have space or resource to have a pair inside the bodies of animals, and that the function of it is enough to function as a sole part of the body. Try imagining trying to fit two engines inside a car. Not only is it unnecessary, but difficult too. I forgot who mentioned this quote but; "Form follows function."

What is that picture at 04:02 ?? I have seen it used at many different places ...

The Mitochondria is the powerhouse of the cell

So the half with lower pressure forms what we associate with left?

why is the asimme human body metrical?

Great

Looking at the ulta magnified visualisation of embryo, I am astonished as how much we have succeeded in microbiology.

We are broken symmetry!

what is the name of the painting shown at last?

The perfect imperfections

Doesn't the embryos heart start as a symetrical pair of structures too?

check ur left and right parts in mirror u will find aesthetic differences in eyes, legs rotation and so on and try to balance urself on one leg u will find u can balance on one side leg better then other side

Is it just me or is the audio vary in loudness, sometimes after a pause of no speech the volume is low and then goes up again after a second of talking?

It is more surprising to realize how we look pretty symmetric on the outside, while pretty much all the building blocks of our body are asymmetric.

nice little movie and animation too ;) go the rinkadink panther innit

Symmetry is beautiful asymmetry is effective and efficient

I know a small boy who had a reversed heart. Because of that his arteries were twisted and his blood circulation was impaired. He had to have several very difficult operations. Now he is a healthy boy, but without having had his arteries untwisted... I don't know, he'd probably be crippled.

I read the thumbnail in 'don't dead open inside' style

Islam deals with body as asymmetrical body and always focus on the right side of the body to sleep on eat using your right hand even when take a bath, we have to start with the right half of the body and I never knew why

but actually you can fit your right glove for your left hand by just reversing the glove

Video: Why are human bodies asymmetrical? Me: So we make very potent bar spinners?

I always used to adore symmetry and not the asymmetry, but now my view has changed.

My left foot is slightly (by not that much) longer than my right.

How do bateris work

“If you try to put your left hand in your right glove, it won’t fit.” Person with 2 right hands on each side of the body: *I am 4 parallel universes ahead of you.*

Liked! 👍

Microcosm macrocosm the imbalances are to keep the flow moving back an forth...

my left foot fits in snugly in my shoes, but my right feels a little small and has a somewhat loose fit :v does that count as asymetry?

So when life first formed, did it just randomly pick a handedness and just stick with it, or what?

Why is the assymme human body trical??

So asymmetry act like balance? Yin and yang? Bad and good?

This didn't answer my question but o k a y

symmetry asymmetry beauty in paired-ness of everything opposites coming together to form full starting from day & night to each thing in universe the formula of the universe's Creator seems like this.. i definitely believe this life is paired with a next one too where the deficiencies & monotony of this "odd" might get some "even" area to be their full!

Interesting. But what is the reason?

OMG this video summarized my first year of med school LOL

Asymetrical ears (height or shape) are not mentionned here, but i believe it's common enough..even if it's not noticeable, it really screws up your glasses? :p The dominant hand or leg should be more muscular too, i think. Some body parts that come in pairs, obviously, (i m betting you r thinking of one or two ''improper'' parts right now hh) , i'm guessing, their different shapes come from asym' muscular use or the oxygenated blood flow.. I feel like the quality of my hair isn't the same on the two halves of my head :p guess it has to do with wich side i favor in my sleep :p it's usually the kind of observation i share while poeple look at me like i m a freak

1:06 thats my brain

This didn't answer the question posed in the title of the video.