Why do we cry? The three types of tears - Alex Gendler

Zakaj jočemo? Tri vrste solz - Alex Gendler

6,826,285 views

2014-02-26 ・ TED-Ed


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Why do we cry? The three types of tears - Alex Gendler

Zakaj jočemo? Tri vrste solz - Alex Gendler

6,826,285 views ・ 2014-02-26

TED-Ed


Za predvajanje videoposnetka dvakrat kliknite na spodnje angleške podnapise.

Translator: Nika Kotnik Reviewer: Matej Divjak
00:06
Our story is about a girl named Iris.
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To je zgodba o deklici po imenu Iris (šarenica).
00:09
Iris is very sensitive.
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Iris je zelo občutljiva.
00:12
(Bird cawing)
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00:13
So much that she is always in tears.
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Tako zelo, da je vedno solzna.
00:16
She cries when she's sad,
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Joče, ko je žalostna,
00:20
when she's happy,
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ko je vesela,
00:21
(Godzilla roars)
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00:23
and even tears up when things just get to her.
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in zajoče, ko se je stvari enostavno dotaknejo.
00:28
She has special lacrimal glands to make new tears
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Ima posebne solzne žleze, da naredi nove solze
00:31
and special tubes, called lacrimal puncta,
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in posebne cevi, imenovane solzovodi,
00:33
to drain old ones away.
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ki drenirajo stare solze.
00:36
And she cries so much that she goes through
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In tako zelo joka, da porabi skoraj 300 gramov solz na dan,
00:38
ten ounces of tears per day,
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00:41
thirty gallons a year!
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114 litrov na leto!
00:43
In fact, if you look closely,
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Pravzaprav, če dobro pogledate,
00:45
you'll see that she's crying a little bit all the time.
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bosti videli, da ves čas po malem joče.
00:49
The basal tears that Iris constantly produces
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Osnovne solze, ki jih neprestano proizvaja Iris,
00:52
form a thin coating of three layers
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sestavljajo tanko prevleko iz treh plasti,
00:54
that cover her and keep dirt and debris away.
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ki jo pokrivajo in ne pustijo zraven smeti in umazanije.
00:58
Right next to Iris is the mucus layer,
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Zraven Iris je mukusna plast,
01:00
which keeps the whole thing fastened to her.
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ki vse skupaj pritrdi nanjo.
01:03
On top of it is the aqueous layer,
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Na njej je vodna plast,
01:06
which keeps Iris hydrated, repels invasive bacteria,
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ki skrbi za vlažnost Iris,
odganja invazivne bakterije,
01:09
and protects her skin, or cornea, from damage.
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in ščiti njeno kožo, ali roženico, pred poškodbami.
01:13
And, finally, there is the lipid layer,
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Na koncu je tu še lipidna plast,
01:15
an oily outer film that keeps the surface smooth
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oljnati zunanji film, ki ohranja gladko površino,
01:18
for Iris to see through,
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da Iris vidi skoznjo,
01:20
and prevents the other layers from evaporating.
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in drugim plastem preprečuje izhlapevanje.
Ponavadi, gre Iris skozi dan,
01:23
Normally, Iris goes about her day
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01:24
without really noticing the basal tears doing their thing.
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ne da bi opazila osnovne solze,
ki opravljajo svoje delo.
01:28
That's kind of their whole point.
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To je njihov namen.
01:30
But one day, she meets a girl named Onion.
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A nekega dne, je spoznala deklico po imenu Čebula.
01:32
Iris is immediately smitten.
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Iris je takoj očarana.
01:34
Onion looks gorgeous in her bright purple jacket,
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Čebula je prelepa v svoji vijolični jakni,
01:37
and she smells terrific.
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in prekrasno diši.
01:39
So, Iris invites Onion to her house for dinner.
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Iris povabi čebulo k sebi na večerjo,
a ko pride in si sleče jakno,
01:43
But when she comes in and takes off her jacket,
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01:45
something terrible happens.
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se zgodi nekaj groznega.
01:47
You see, when Onion's jacket is removed,
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Vidite, ko čebula sname jakno,
01:49
a chemical reaction happens,
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se zgodi kemična reakcija,
01:51
converting the sulfoxides that make her smell so great
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ki spremeni žveplo okside, zaradi katerih tako lepo diši,
01:54
into sulfenic acid,
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v sulfonsko kislino,
01:56
which then becomes a nasty substance with a long name:
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ki nato postane nemarna substanca z dolgim imenom.
02:00
syn-Propanethial S-oxide.
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sin-propanetial-S-oksid.
Ta plin peče Iris,
02:04
The gas stings Iris, and suddenly, she can't help it,
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in nenadoma, ne more si pomagati, začne neutolažljivo jokati.
02:07
she starts weeping uncontrollably.
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02:10
These reflex tears are different from the basal tears
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Te refleksne solze so drugačne od tistih,
02:13
that Iris is used to.
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ki jih je navajena Iris.
02:14
Because they're designed
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Ker so zasnovane za spiranje
02:16
to wash away harmful substances, or particles,
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škodljivih substanc, ali delcev,
se sproščajo v večjih količinah,
02:18
they're released in much larger amounts,
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02:21
and their aqueous layer contains more antibodies
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in njihova vodna plast vsebuje več protiteles
02:23
to stop any microorganisms that may be trying to get in, as well.
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da ustavi mikroorganizme, ki prav tako morda poskušajo priti noter.
02:28
Both Iris and Onion are devastated.
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Iris in Čebula sta obupani.
02:30
They know they can't continue their relationship
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Vesta, da razmerja ne moreta nadaljevati, če bo Iris prizadeta in bo jokala
02:33
if Iris is going to hurt and cry every time Onion takes off her jacket.
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vsakič, ko Čebula sname jakno.
02:37
So, they decide to break up.
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Zato se razideta.
02:39
As Onion walks out the door, Iris stops crying.
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Ko gre Čebula skozi vrata, Iris neha jokati.
02:42
And immediately starts again.
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In nato takoj spet začne.
02:44
Only now, she's not crying reflex tears but emotional tears.
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Samo da sedaj, ne joče refleksnih solz,
ampak čustvene solze.
02:49
When someone is either too sad or too happy,
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Ko je nekdo preveč žalosten ali preveč srečen,
02:52
it feels like a loss of control,
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se zdi kot izguba kontrole,
02:54
which can be dangerous.
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kar je lahko nevarno.
02:55
So, emotional tears are sent in to stabilize the mood
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Zato so tu čustvene solze
da uravnovesijo počutje,
02:58
as quickly as possible,
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kakor hitro se da,
03:00
along with other physical reactions,
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skupaj z drugimi telesnimi reakcijami,
03:02
such as an increased heart rate and slower breathing.
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kot je pospešen srčni utrip
in počasnejše dihanje.
03:05
But scientists still aren't sure
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A znanstveniki še zdaj ne vedo,
03:07
exactly how or why the tears themselves are helpful.
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kako natančno ali zakaj so pri tem solze pomembne.
03:11
They may be a social mechanism to elicit sympathy or show submission.
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Morda so socialni mehanizem
za vzbujanje sočutja ali izkazovanje podrejenosti.
03:15
But some studies have also found
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A nekatere študije so ugotovile,
03:17
that emotional tears contain higher levels of stress hormones,
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da vsebujejo čustvene solze višje vrednosti stresnih hormonov,
03:21
such as ACTH and enkephalin,
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kot je ACTH in enkefalin,
03:24
an endorphin and natural pain killer.
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endorfin in naravna protibolečinska snov.
03:26
In this case, emotional tears are also directly calming Iris down,
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V tem primeru, čustvene solze direktno pomirjajo Iris,
03:30
as well as signaling her emotional state to others.
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prav tako pa sporočajo njeno stanje drugim.
03:33
Sorry things didn't work out with Onion, Iris,
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Žal mi je, da se s Čebulo stvari niso izšle, Iris, a ne skrbi.
03:35
but don't worry.
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03:37
As long as you have all three kinds of tears
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Dokler imaš tri vrste solz,
03:39
working to keep you balanced and healthy, it will get better.
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ki ohranjajo tvoje ravnovesje in srečo,
bo bolje.
03:42
You'll see.
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Boš videla.
O tej spletni strani

Na tem mestu boste našli videoposnetke na YouTubu, ki so uporabni za učenje angleščine. Ogledali si boste lekcije angleščine, ki jih poučujejo vrhunski učitelji z vsega sveta. Z dvoklikom na angleške podnapise, ki so prikazani na vsaki strani z videoposnetki, lahko predvajate videoposnetek od tam. Podnapisi se pomikajo sinhronizirano s predvajanjem videoposnetka. Če imate kakršne koli pripombe ali zahteve, nam pišite prek tega obrazca za stike.

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