Home -> Unit 5 -> Digestive
  
    
    
    HA23: Pyloric-duodenal junction, H&E
   
    
     
  
    Tall villi appear in the duodenum (HA23).  An arrow indicates the transition point. Large mucous glands (Brunner's glands, HA23, 24 Bg) appear in the submucosa.  These glands secrete alkaline mucus.