What is the function of the hepatopancreatic sphincter?
A.
As it contracts, it squeezes pancreatic secretions into the duodenum.
B.
It controls the entry of bile and pancreatic juices into the alimentary canal.
C.
It inhibits defecation in the upper alimentary canal while the anal sphincters do the same in the lower regions.
D.
It prevents the movement of bile into the gallbladder