The correct route for a piece of bread eaten by a mammal is
-
A.
oral cavity – oesophagus – stomach – ileum – rectum -
B.
oral – cavity – stomach – oesophagus – duodenum – ileum – rectum -
C.
oral cavity – oesophagus – duodenum – rectum -
D.
oral cavity – oesophagus – ileum – stomach – duodenum – rectum -
E.
oral cavity – oesophagus – stomach – ileum – duodenum – rectum