Why does hitting your funny bone feel so horrible? - Cella Wright

681,296 views ・ 2024-07-23

TED-Ed


μ•„λž˜ μ˜λ¬Έμžλ§‰μ„ λ”λΈ”ν΄λ¦­ν•˜μ‹œλ©΄ μ˜μƒμ΄ μž¬μƒλ©λ‹ˆλ‹€.

λ²ˆμ—­: Jinsol Song κ²€ν† : DK Kim
00:07
Whatever you were doing, there was no way to anticipate what came next.
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무슨 일을 ν•˜λ“  간에 λ‹€μŒμ— 무슨 일이 μƒκΈΈμ§€λŠ” μ•Œ 수 μ—†μ£ .
00:12
The back of your elbow smacked against a hard surface
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νŒ”κΏˆμΉ˜ λ’€μͺ½μ΄ λ”±λ”±ν•œ ν‘œλ©΄μ— λΆ€λ”ͺν˜”μ„ λ•Œ
00:15
and the impact sent a sensation so distinctly disquieting
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μ°Œλ¦Ών•˜κ³  λΆˆνŽΈν•œ 좩격이 νŒ”μ„ 톡해 λ‚΄λ €κ°€
00:19
shooting down your arm that it took several moments to regain composure.
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κ·Έ μΆ©κ²©μ—μ„œ 정신차리렀면 ν•œμ°Έ 걸렸던 적이 있죠.
00:24
So, why does hitting this spot on your elbowβ€”
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κ·Έλ ‡λ‹€λ©΄ νŒ”κΏˆμΉ˜μ˜ 이 뢀뢄을 λΆ€λ”ͺ히면,
00:28
often referred to as your funny boneβ€” feel so weird?
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ν”νžˆ 척골단이라 ν•˜λŠ” 뢀뢄을 λΆ€λ”ͺ히면 μ™œ μ΄λ ‡κ²Œ λŠλ‚Œμ΄ μ΄μƒν•œ κ±ΈκΉŒμš”?
00:32
Well, to start, your elbow is one of the most complicated joints in your body.
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μš°μ„ , νŒ”κΏˆμΉ˜λŠ” μ‹ μ²΄μ—μ„œ μ•„μ£Ό λ³΅μž‘ν•œ κ΄€μ ˆ 쀑 ν•˜λ‚˜μž…λ‹ˆλ‹€.
00:38
It's where your upper arm bone, the humerus,
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이곳은 νŒ”λš μœ„μͺ½ 뼈인 상완골이
00:41
meets the two bones of your forearm.
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νŒ”λšμ˜ 두 λΌˆμ™€ λ§Œλ‚˜λŠ” μ§€μ μž…λ‹ˆλ‹€.
00:43
Three main nerves run through your elbow.
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μ£Όμš” μ‹ κ²½ μ„Έ κ°œκ°€ μ—¬κΈ°λ₯Ό μ§€λ‚˜ νŒ”κΏˆμΉ˜μ— 이어지고 있죠.
00:45
One of them, the ulnar nerve, is particularly relevant for our purposes.
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νŠΉνžˆλ‚˜ 그쀑 ν•˜λ‚˜μΈ 척골 신경이 이 ν˜„μƒκ³Ό 관련이 μžˆμŠ΅λ‹ˆλ‹€.
00:50
Your ulnar nerve is composed of both sensory and motor nerve fibers.
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척골 신경은 감각 μ‹ κ²½ μ„¬μœ μ™€ μš΄λ™ μ‹ κ²½ μ„¬μœ λ‘œ κ΅¬μ„±λ˜μ–΄ μžˆμŠ΅λ‹ˆλ‹€.
00:55
It extends from your spine to the tips of your fourth and fifth fingers,
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μ²™μΆ”μ—μ„œ λ‚˜μ™€ λ„€ λ²ˆμ§Έμ™€ λ‹€μ„― 번째 손가락 λκΉŒμ§€ 이어져
01:00
providing them with sensation along with swaths of your forearm and hand.
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νŒ”λšκ³Ό μ†μ˜ 감각, 그리고 μ›€μ§μž„μ„ 느끼게 ν•˜μ£ .
01:05
So, say your little finger gets crushed by a car door.
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μƒˆλΌ 손가락이 μžλ™μ°¨ 문에 λΌμ—ˆλ‹€κ³  κ°€μ •ν•΄λ΄…μ‹œλ‹€.
01:09
Sensory receptors in your pinky finger's tissues
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μƒˆλΌ 손가락 쑰직에 μžˆλŠ” 감각 μˆ˜μš©μ²΄κ°€
01:12
register that unfortunate information
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이 κ³ ν†΅μŠ€λŸ¬μš΄ 정보λ₯Ό μΈμ§€ν•΄μ„œ
01:15
and send electrical impulses up the ulnar nerve,
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척골 μ‹ κ²½μœΌλ‘œ μ „κΈ° μžκ·Ήμ„ 보내고
01:18
which are then processed in your central nervous system.
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이 μžκ·Ήμ€ 쀑좔 μ‹ κ²½κ³„μ—μ„œ μ²˜λ¦¬λ©λ‹ˆλ‹€.
01:22
This leads to the perception of acute, sharp pain,
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κ·Έλž˜μ„œ κ·Ήμ‹¬ν•˜κ³  λ‚ μΉ΄λ‘œμš΄ 톡증을 λ¨Όμ € λŠλ‚€ λ‹€μŒμ—
01:25
followed by aching.
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아픔을 느끼게 λ˜λŠ” 것이죠.
01:27
So that's how your ulnar nerve generally works.
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척골 신경은 일반적으둜 μ΄λ ‡κ²Œ μž‘μš©ν•©λ‹ˆλ‹€.
01:30
But your elbow has an anatomical quirk that leaves your ulnar nerve vulnerable
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ν•˜μ§€λ§Œ νŒ”κΏˆμΉ˜μ— μžˆλŠ” 해뢀학적 νŠΉμ„±μœΌλ‘œ 인해
척골 신경은 λ‹€λ₯Έ λ°©μ‹μœΌλ‘œ ν™œμ„±ν™”λ˜κΈ°κ°€ μ‰½μŠ΅λ‹ˆλ‹€.
01:34
to getting activated in a different way.
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01:37
Along almost all of its length, your ulnar nerve is protected,
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척골 신경은 거의 λͺ¨λ“  κ΅¬κ°„μ—μ„œ
근윑, 지방, 뼈 μ•„λž˜μ— μˆ¨μ–΄μ„œ λ³΄ν˜Έλ°›μŠ΅λ‹ˆλ‹€.
01:42
hidden beneath muscle, fat, and bone.
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01:45
Thankfully, this is generally true of your nerves.
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λ‹€ν–‰νžˆλ„ 신경듀은 λŒ€κ°œ κ·Έλ ‡μ£ .
01:47
But when your ulnar nerve reaches your elbow,
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그런데 척골 신경이 νŒ”κΏˆμΉ˜λ₯Ό 지날 λ•ŒλŠ”
01:50
it runs beneath the bony bump at the bottom of your humerus,
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λ‚΄μΈ‘ 상과라고 λΆ€λ₯΄λŠ”
상완골 μ•„λž˜μͺ½μ˜ 뼈 돌기λ₯Ό μ§€λ‚˜κ³ ,
01:54
named the medial epicondyle,
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2002
01:56
and it passes through a tunnel of ligament and muscle tissue
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νŒ”κΏˆμΉ˜ 터널이라고 ν•˜λŠ” μΈλŒ€μ™€ 근윑으둜 된 터널을 μ§€λ‚©λ‹ˆλ‹€.
01:59
called the cubital tunnel.
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02:01
When you bend your elbow,
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νŒ”κΏˆμΉ˜λ₯Ό ꡬ뢀리면 척골 신경이 λ‚΄μΈ‘ 상과에 λ‹Ώμ•„ λ‚©μž‘ν•΄μ§€λŠ”λ°
02:02
your ulnar nerve gets flattened against the medial epicondyle
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02:06
and the protective tissue in the area gets displaced,
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μ΄λ•Œ ν•΄λ‹Ή λΆ€μœ„μ˜ 보호 쑰직이 λ°€λ €λ‚˜λ©΄μ„œ
02:09
bringing the nerve especially close to the skin's surface.
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신경이 ν”ΌλΆ€ ν‘œλ©΄μ— 맀우 κ°€κΉŒμ›Œμ§€κ²Œ λ©λ‹ˆλ‹€.
02:13
In this position, the ulnar nerve is covered only by skin
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이런 μžμ„Έμ—μ„œλŠ” 척골 신경을 λ³΄ν˜Έν•˜κ³  μžˆλŠ” 게
피뢀와 μ–‘μΈ‘ 터널 μΈλŒ€ 쑰직뿐이라
02:17
and cubital tunnel ligament tissue,
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02:19
making it perhaps the longest area of semi-exposed nerve in your body.
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μ‹ μ²΄μ—μ„œ κ°€μž₯ 길게 λ°˜λ…ΈμΆœ μƒνƒœμΈ μ‹ κ²½ λΆ€μœ„κ°€ λ˜λŠ” κ±°μ£ .
02:24
So, when the area is struck at the right angle with enough force,
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λ”°λΌμ„œ μ •ν™•ν•œ 각도와 μΆ©λΆ„ν•œ 힘으둜 κ·Έ 뢀뢄을 λΆ€λ”ͺ히게 되면
02:29
something interesting happens.
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μ°Œλ¦Ών•œ 기뢄을 느끼게 λ˜λŠ” κ±°μ£ .
02:31
Instead of the sensation simply activating peripheral receptors
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자극이 λ‹¨μˆœνžˆ 말초 수용체λ₯Ό ν™œμ„±ν™”ν•΄μ„œ
02:35
that send electrical signals along your ulnar nerve,
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척골 신경을 따라 μ „κΈ° μ‹ ν˜Έλ₯Ό λ³΄λ‚΄λŠ” 게 μ•„λ‹ˆλΌ
02:39
the nerve's fibers are stimulated directly.
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μ‹ κ²½ μ„¬μœ κ°€ 직접 μžκ·Ήμ„ λ°›μŠ΅λ‹ˆλ‹€.
02:42
This is why hitting your so-called funny bone hits different.
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κ·Έλž˜μ„œ 척골단을 λΆ€λ”ͺ히면 μ°Œλ¦Ών•œ λŠλ‚Œμ΄ λ“œλŠ” κ±°μ£ .
02:47
The exact mechanisms aren't yet fully understood.
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μ •ν™•ν•œ λ§€μ»€λ‹ˆμ¦˜μ€ 아직 μ™„μ „νžˆ μ΄ν•΄λ˜μ§€ μ•Šμ•˜μŠ΅λ‹ˆλ‹€.
02:50
But the impact alters the ulnar nerve's signaling,
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ν•˜μ§€λ§Œ 좩격이 μ‹ κ²½ μ‹ ν˜Έμ˜ 증식을 μœ λ°œν•˜μ—¬
02:53
perhaps by causing a proliferation of nerve signals,
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척골 μ‹ κ²½μ˜ μ‹ ν˜Έ 전달이 λ³€ν™”ν•˜λ©΄μ„œ
02:56
leading to that intense pins-and-needles sensation
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κ·Έ κ°•λ ¬ν•˜κ³  μ°Œλ¦Ών•œ λŠλ‚Œμ„ μœ λ°œν•  μˆ˜λ„ μžˆλŠ” κ±°μ£ .
02:59
called transient paresthesia,
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이것은 μΌμ‹œμ  이상 감각이라 ν•˜λŠ”λ°
03:01
which radiates down the length of your arm.
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이 감각은 νŒ” μ „μ²΄λ‘œ νΌμ§‘λ‹ˆλ‹€.
03:04
In rare cases, whacks to this special spot
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λ“œλ¬Έ 경우이긴 ν•˜μ§€λ§Œ, 이 νŠΉλ³„ν•œ λΆ€μœ„λ₯Ό λΆ€λ”ͺ히면
03:07
have led to temporary loss of consciousness,
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μΌμ‹œμ μœΌλ‘œ μ˜μ‹μ„ μžƒμ„ μˆ˜λ„ μžˆλŠ”λ°,
03:10
perhaps because a hard enough strike could disrupt nerve signaling
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μ„Έκ²Œ λΆ€λ”ͺ히면 μ‹ κ²½ μ‹ ν˜Έμ™€ ν˜ˆμ•‘ 흐름을 λ°©ν•΄ν•˜κΈ° λ•Œλ¬ΈμΌ μˆ˜λ„ 있죠.
03:14
and blood flow.
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03:15
In addition to these more immediately distressing moments,
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μ΄λ ‡κ²Œ μˆœκ°„μ μœΌλ‘œ μ•„ν”ˆ κ²½μš°λ„ μžˆμ§€λ§Œ
03:19
regular bent-elbow activities are thought to put pressure
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μ§€μ†μ μœΌλ‘œ νŒ”κΏˆμΉ˜λ₯Ό κ΅½νžˆλŠ” ν™œλ™μ€
μ‹œκ°„μ΄ μ§€λ‚ μˆ˜λ‘ 척골 신경에 μ••λ ₯을 κ°€ν•˜κ²Œ λ©λ‹ˆλ‹€.
03:22
on the ulnar nerve over time.
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03:24
Ulnar nerve entrapment is a relatively common condition.
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척골 μ‹ κ²½ 압박은 비ꡐ적 ν”ν•œ μ§ˆν™˜μž…λ‹ˆλ‹€.
03:28
It happens when the ulnar nerve becomes compressed and obstructed,
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μ΄λŠ” 척골 신경이 μ••λ°•λ˜κ³  λ§‰νžˆλ©΄μ„œ λ°œμƒν•˜λ©°,
03:32
most commonly with the cubital tunnel.
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νŒ”κΏˆμΉ˜ ν„°λ„μ—μ„œ κ°€μž₯ ν”ν•˜κ²Œ λ°œμƒν•©λ‹ˆλ‹€.
03:34
The result of this chronic ulnar nerve pain can be persistent paresthesia,
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λ§Œμ„± 척골 신경톡은 지속적인 감각 이상뿐 μ•„λ‹ˆλΌ
03:39
as well as weakness in the forearm and hand.
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νŒ”λšκ³Ό 손이 μ•½ν•΄μ§€λŠ” κ²°κ³Όλ₯Ό 낳을 μˆ˜λ„ 있죠.
03:42
In the hopes of preventing such conditions,
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μ΄λŸ¬ν•œ μ§ˆλ³‘μ„ μ˜ˆλ°©ν•˜κΈ° μœ„ν•΄
03:44
doctors recommend conscientious elbow usage.
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μ˜μ‚¬λ“€μ€ μ˜μ‹μ μœΌλ‘œ νŒ”κΏˆμΉ˜λ₯Ό μ‚¬μš©ν•˜κΈΈ ꢌμž₯ν•˜μ£ .
03:47
That includes stretching your arms and straightening your elbows,
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μ΄μ—λŠ” νŒ”μ„ λ»—κ³  νŒ”κΏˆμΉ˜λ₯Ό 곧게 νŽ΄λŠ” 것,
03:51
and generally taking breaks that help provide regular relief
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그리고 μ „λ°˜μ μΈ νœ΄μ‹μ„ μ·¨ν•΄μ„œ
척골 신경에 κ·œμΉ™μ μΈ νœ΄μ‹κ³Ό μ΅œλŒ€ν•œμ˜ 혈λ₯˜λ₯Ό κ³΅κΈ‰ν•˜λŠ” 게 μžˆμŠ΅λ‹ˆλ‹€.
03:54
and maximal blood flow to your ulnar nerve.
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이 μ›Ήμ‚¬μ΄νŠΈ 정보

이 μ‚¬μ΄νŠΈλŠ” μ˜μ–΄ ν•™μŠ΅μ— μœ μš©ν•œ YouTube λ™μ˜μƒμ„ μ†Œκ°œν•©λ‹ˆλ‹€. μ „ 세계 졜고의 μ„ μƒλ‹˜λ“€μ΄ κ°€λ₯΄μΉ˜λŠ” μ˜μ–΄ μˆ˜μ—…μ„ 보게 될 κ²ƒμž…λ‹ˆλ‹€. 각 λ™μ˜μƒ νŽ˜μ΄μ§€μ— ν‘œμ‹œλ˜λŠ” μ˜μ–΄ μžλ§‰μ„ 더블 ν΄λ¦­ν•˜λ©΄ κ·Έκ³³μ—μ„œ λ™μ˜μƒμ΄ μž¬μƒλ©λ‹ˆλ‹€. λΉ„λ””μ˜€ μž¬μƒμ— 맞좰 μžλ§‰μ΄ μŠ€ν¬λ‘€λ©λ‹ˆλ‹€. μ˜κ²¬μ΄λ‚˜ μš”μ²­μ΄ μžˆλŠ” 경우 이 문의 양식을 μ‚¬μš©ν•˜μ—¬ λ¬Έμ˜ν•˜μ‹­μ‹œμ˜€.

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