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장내세균

장내세균. 장 (Gut, Intestine ) 의 구조. 점막 ( Mucosa ) ; 상피세포 ( epithelial ) 로 구성 점막하조직 (Submucosa ) : 신경과 혈관이 분포 근육 ( Muscularris ) : 평활근 ( smooth muscle ) 두층 안쪽 ; circular 바깥쪽 ; longitudinally 장막 ( Serosa ) ; 결합조직 ( connective tissue ).

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장내세균

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  1. 장내세균

  2. 장 (Gut, Intestine )의 구조 점막 ( Mucosa ) ; 상피세포( epithelial)로 구성 점막하조직 (Submucosa ) : 신경과 혈관이 분포 근육 ( Muscularris ) : 평활근 ( smooth muscle ) 두층 안쪽 ; circular 바깥쪽 ; longitudinally 장막 ( Serosa ); 결합조직 ( connective tissue ) http://www.youtube.com/watch?v=q3986Yfl5cU&feature=related

  3. 소장( Small intestine ) 길이 약 6m 표면적약 300 m2 기능; 위산을 중화 영양분흡수 재생 4일 줄기세포

  4. 노화에 따른 변화 근육 수축이 약해진다 소화샘의 기능이 약화 위산 분비 60세에 25% 감소 칼슘 흡수의 변화 수동적 흡수 능동적 흡수 ( 혈액속의 비타민 D와 연관 )

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