TY  - CHAP
M1  - Book, Section
TI  - Normal Structure and Function of the Gastrointestinal Tract
A1  - Cohen, Mitchell B.
A2  - Kline, Mark W.
Y1  - 2018
N1  - 
T2  - Rudolph's Pediatrics, 23e
AB  - The  gastrointestinal  (GI)  tract  is  a  continuous  tube  beginning  at  the  mouth  and  ending  at  the  anus  (Fig.  376-1).  It  is  subdivided  into  4  regions:  (1)  esophagus,  (2)  stomach,  (3)  small  intestine,  and  (4)  large  intestine.  The  liver  and  pancreas  directly  communicate  with  the  GI  tract  via  ducts  that  join  with  the  duodenum,  the  most  anterior  segment  of  small  intestine.  The  main  function  of  the  GI  tract  is  to  digest  food  and  absorb  nutrients  and  fluid.  At  the  cellular  level,  the  tissue  architecture  of  the  gut  tube  is  similar  throughout,  consisting  of  4  concentric  layers;  from  the  inner  layer  to  outer  layer,  they  are  (1)  mucosa,  (2)  submucosa,  (3)  muscularis  propria  (externa),  and  (4)  adventitia  or  serosa.  The  mucosa  is  composed  of  epithelium,  lamina  propria,  and  muscularis  mucosae  (Fig.  376-2).  
SN  - 
PB  - McGraw-Hill Education
CY  - New York, NY
Y2  - 2024/04/23
UR  - accesspediatrics.mhmedical.com/content.aspx?aid=1182907108
ER  -