Name: 【TED-Ed】Gravity and the human body - Jay Buckey
Uploaded: 2014-08-13T04:06:00.000Z
Duration: 4 min 46 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

and you take the cast off after a few weeks,

you'll see that your muscles have shrunk in size.

you'd also see that might have gone down a little bit, too.

And so, it's very interesting that our body has that ability

to adapt to the loads that are put on it,

While we think of bone as being a solid thing

they'll start to shrink and lose strength.

There are other things in the cardiovascular system,

in order to keep blood pumping to your head.

So, if you couldn't keep blood pumping in the head,

But that system can also change in weightlessness.

is the system that has to do with balance.

is something that you're doing against gravity, right?

you wouldn't have to worry about falling.

But you obviously do have to worry about falling,

and we have a very highly developed sense of balance

you realize just how exquisite a system it is.

And what it shows is that while you're in space,

And so, it re-adapts you to be weightless,

which you don't notice until you come back

and find out that you're now back on Earth

with a balance system that's been adapted to space.

You know, all life developed here on Earth

so life evolved under the influence of gravity,

and then we grow up with gravity being present,

And what if you were to grow up without gravity?

What about the systems that depend on gravity,

that it would go down a different pathway

and they put a patch over the eye of the kitten.

Now, there's nothing wrong with the eye, right?

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【TED-Ed】Gravity and the human body - Jay Buckey

present

brain

fall

develop