serosa is made up of
thin methothelium (epithelium of visceral organs,with some connective tssues)
muscularis is made up of
smooth muscles inner circular outer longitudinal (an oblique muscle layer maybe present in some regions0
submucosa is made up of
loose connective tissue containing nerves blood and lymph vessel
in deodnum glands are present in
submucosa
saliva containselectrolytes like
na+,k+,hco3-,cl-
cystic duct +hepatyic duct
common bile duct
bile duct +pancreatic duct
common hepato pancreatic duct