뒤회색질기둥

Posterior grey column (posterior horn of spinal cord)
Cross section of the spinal cord. The posterior horn is the upper protrusion of grey matter, labeled with "2"
정보
식별자
라틴어cornu posterius medullae spinalis
MeSHD066148
TA98A14.1.02.115
A14.1.02.023
A14.1.02.114
TA26064
FMA256530

뒤회색질기둥(posterior grey column, 후회백주, 뒤기둥, 후주) 또는 뒷뿔(posterior cornu, dorsal horn, spinal dorsal horn, posterior horn) 또는 감각뿔(sensory horn)[1]은 척수의 세 개의 회색질기둥(grey column, 회백주) 중 하나이다. 이는 척수의 측면 절반에 뚜렷하게 나타나는 등측면 방향의 회백질 능선이다. 횡단면에서 볼 때 뒤뿔(posterior horn, 후각) 또는 등뿔(dorsal horn, 배각)이라고 불린다.[2]

뒤쪽 기둥에는 2차 감각 뉴런의 세포체와 유사단극성 1차 감각 뉴런(세포체가 감각 신경절(일명 등근 신경절) 내에 위치함)과의 시냅스가 포함되어 있다. 이는 피부, 뼈, 관절의 수용체로부터 신체 부위(미세한 촉각, 고유 감각 및 진동 포함)로부터 여러 유형의 감각 정보를 수신한다.

같이 보기

각주

  1. ↑ “Dorsal horn | anatomy”. 《Encyclopedia Britannica》 (영어). 2021년 5월 4일에 확인함. 
  2. ↑ “columna posterior”. 《TheFreeDictionary.com》. 2023년 6월 13일에 확인함. 

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