My name is Blocko, your virtual tour guide, and we are about to explore the human body.

我是Blocko, 你的虛擬導遊，我們即將探索人類的身體

You probably can't tell right now but we're inside the body of a giant

你可能還沒辦法分辨，不過我們現在在一個巨人的身體裡

Luckily for us, we caught him while he's sleeping.

幸運的是，我們在他睡覺時進來的

I'm pretty sure he was dreaming earlier, because his arms and leg muscles were temporarily paralyzed,

我敢肯定他剛剛在作夢，因為他四肢肌肉都暫時動不了

and he kept mumbling something about dinosaurs.

他一直喃喃自語說恐龍什麼的

So, needless to say, this is a pretty cool giant.

所以不用多說，這是一位很酷的巨人

Oh no, I think he's waking up now.

不，我想他要醒來了

And he's running, judging by how fast he's breathing, of course.

他現在在跑步，當然是從他呼吸急促的狀況來判斷的

Let's go take a look.

我們去看一下

The air this giant is breathing is flowing down his trachea, and into the tubes called the bronchioles

這個巨人吸人的空氣正流入氣管中，然後進入所謂的細支氣管的管子

And if you look ahead, you can see where the alveoli are located.

如果再往前看，你可以看到肺泡的位置

Surrounding these air-filled sacks are a bunch of capillaries where the red blood cell pass by.

包覆這些氣囊的是一些紅血球會經過的毛細血管

The blood is capturing oxygen from the air around us while carbon dioxide is being released into the sack.

血液正捕捉我們周遭空氣裡的氧氣，同時將二氧化碳釋放到氣囊裡

And we better get out of here soon because this guy is going to exhale.

我們最好趕緊離開這裡，因為他很快就要吐氣了

Quick, let's jump into the capillary.

快點，我們跳到毛細血管裡

Woo, welcome to the roller coaster that is your circulatory system.

好險，歡迎搭乘循環系統雲霄飛車

The oxygenated blood around us is traveling through the pulmonary vein to the left side of the heart.

我們身體裡的充氧血會透過肺靜脈傳到心臟的左邊

From there, it gets pumped to the rest of the body,

再從那裡輸入至身體的其他部位

giving the giant's muscles the oxygen they need to turn glucose into energy

提供巨人的肌肉所需的氧氣，好把葡萄糖轉換成能量

And see those little molecules?

看到這些小分子嗎?

That's carbon dioxide being released into the blood

那是二氧化碳正被釋放到血液中

It will eventually reach the right side of the heart

最終會到達心臟的右邊

and get pumped back over to the lungs, where it'll be breathed out.

然後灌注回肺部裡再被吐出

And this process just keeps going on and on and on, until, well, you stop breathing.

這樣的過程會一直反覆地進行，直到你停止呼吸為止

Hmm, it seems like the giant has stopped running

巨人好像停止跑步了

Let's go up a little higher and see what's going on, shall we?

我們往上一點，看看發生什麼事了，好嗎?

Okay, I don't want to alarm you.

好吧，我不想要嚇你

But there is a massive boulder of chewed food above us.

但是有一球巨大咀嚼過的食物在我們的上方

And I think it's pizza. Definitely pizza.

而且我覺得是比薩，一定是比薩。

Not the best post-workout meal, but I approve.

不是健身後最佳的食物，但我勉強可以接受

As you can see, the food isn't just falling down the esophagus

你可以看到，食物不是只是掉入食管

It's being shuttled down as the muscles in the walls contract

而是管壁的肌肉來回收縮將食物往下推

And if we fast forward a bit we can see the food pass through a sphincter and into the stomach

如果我們快轉一點就可以看到食物通過括約肌然後進到胃裡

Now isn't that amazing

是不是很神奇

Okay. Now don't get too close to that juice down there.

不要太接近下面的液體

It's filled with mucus, enzymes, and hydrochloric acid

它充滿著黏液、酵素及鹽酸

And that stuff burns

那是會灼傷的

The stomach is breaking down that pizza into a liquefied consistency called "chyme"

胃會把比薩分解成液化的物質稱之為食糜

Oh no, the blood vessels around the stomach seem to be closing

哦不，胃四周的血管好像要開始閉合了

This guy is feeling some serious butterflies in here

這個人感覺非常的緊張

Let's go find out what he's doing

我們去看看他在做什麼

Oh, it looks like he's on a date

哦，他好像在約會

You're probably wondering why everything is upside down, though, right?

你可能在納悶為什麼影像都是顛倒的，對吧?

Well you see, when the light is entering the eye,

是這樣的，當光進入眼睛

it passes through the cornea and the lens, inverting the image when it reaches the retina of your eye

通過角膜和晶狀體，到達眼睛的視網膜時就會使影像上下顛倒

It's the brain's job to make sense of this information, and flip the image back around

大腦的工作就是要讓這個訊息合理化，並且將影像翻轉過來

And speaking of the brain, let's go give it a visit.

說到大腦，我們去探訪一下吧

So back in the opptical lobe is where the brain perceives vision, including the site of this guy's amazing date.

回到視葉，它是大腦接收影像的地方，包括這個人超棒的約會地點

And speaking of his date, if you look closely over here,

說到他的約會，如果你仔細看這裡

you can see the feel good neurotransmitter dopamine being released into the synapse between neurons

你可以看到感覺良好的神經遞質「多巴胺」，正釋放到神經元間的突觸

It's making me so happy just watching them.

光是看著它們讓我感到很快樂

Okay let's... let's give this guy some privacy and fast foward a few more hours

好了，我們…我們給這個人一些隱私，快轉幾個小時吧

And while we do so, let's check up on that pizza he ate earlier

同時，我們去看一下他稍早吃的比薩

Now that it's reached the small intestine, the fun can really begin.

它現在已經到了小腸，有趣的事才要開始

Enzymes from the pancreas and bile produced by the liver, help break down the carbs, fats, and proteins in the chyme.

胰臟酵素和肝臟分泌出的膽汁，都可以幫助分解食糜裡的碳水化合物、脂肪和蛋白質

Any water and nutrients from the incredibly nutritious pizza is absorbed by the tiny villi and sent to the blood stream.

在營養豐富的比薩中，任何的水和養份會被微小絨毛吸收，再傳送到血液

Now according to my thermometer here,

根據我這裡的溫度計

the giant's body temperature is going down a tiny bit,

巨人的體溫下降了一點點

which means it's about time for bed.

也就是說睡覺時間到了

The body and mind need to heal for the night so we'd better get out of here

身體和頭腦需要在晚上進行修復，所以我們最好趕快離開

This was really fun. Thank you for exploring the human body with me

真的很有趣，謝謝你和我一起探索人類的身體

I'm Blocko, this has been Life Noggin, and don't forget to keep on thinking.

我是Blocko，這裡是Life Noggin，不要忘記要多動動腦