선천성 이루공(先天性 耳瘻孔 : 귀 부스럼 구멍) - 아가미가 퇴화한 흔적

[세이지]

瘻(루) : 연주창(連珠瘡), 부스럼.

https://youtu.be/k-1xSt1XFzo

https://youtu.be/E8ttoKGxEKc

https://youtu.be/XxfnOBlEZX4

https://youtu.be/qiecZveYhjs

시카고대 생물학자 Neil Shubin(닐 슈빈 ; 56)은 "인간의 신체는 어류, 파충류 등의 해부 구조와 비슷하다"고 주장했다.

그는 인간의 손과 머리 등 신체구조는 물고기의 지느러미와 무악어류와 닮은 곳이 많다고 저서 'Your inner fish(네 안의 물고기)'에서 주장했다.

유럽과 미국 인구의 1~9%, 대만 인구의 2.5%, 아프리카 인구의 10% 정도가 선천성 이루공(先天性 耳瘻孔)을 앓는다. 선천성 이루공(先天性 耳瘻孔)은 양쪽 귀 두곳에 모두 발현이 가능하지만 대개 오른쪽 귀에 위치해 있다

선천성 이루공(先天性 耳瘻孔)

Congenital auricular fistula

1. 선천성 이루공

2. = Preauricular sinus and cyst

3. 전이개 누공

4. 선천성 전이개 낭포

5. 주로 귓바퀴가 시작되는 부분에 선천적으로 작은구멍이 생김

Why Do Some People Have A Tiny Extra Hole In Their Ear?



By Tom Hale

21 Nov 2016, 19:19



You might have noticed that a few people have a barely noticeable hole where the top of their ear cartilage meets their face.

Believe it or not, it’s probably not the remnants of an old piercing they had when they were 15.


Just 0.1 percent of the population have it in the US, 0.9 percent in the UK, and as many as 4 to 10 percent in Asia and parts of Africa, according to one study. In South Korea, that figure could be as high as 5 percent, and it’s most common in people of African or Asian descent.


It’s actually a congenital disorder called preauricular sinus. Although harmless in itself, it can be susceptible to infection. It is caused by the first and second pharyngeal arches. This is a structure found in all vertebrates that occurs during embryonic development. In mammals, they go on to form the structures of the head and neck, but in fish they also help develop into their gills.

It’s this odd connection that led Neil Shubin, an evolutionary biologist, to speculate that the holes could be an "evolutionary remnant of fish gills," according to Business Insider.

Of course, that’s currently a theory that hasn't been scientifically tested. But nevertheless, when you think that we still have tailbones, goosebumps, and appendixes from our evolutionary forebearers, it's certainly not impossible.