In the empty stomach,mucosal folds appear. They are called

The diagram of the large intestine is given below. Identify the parts $A, B, C, D, E$ and $F$.

Choose the incorrect statement regarding the human digestive system with reference to a normal person.

Select the correct statement$(s)$:
$(A)$ The alimentary canal begins with an anterior opening,the mouth.
$(B)$ Each tooth is embedded in a socket of jaw bone.
$(C)$ Humans exhibit a diphyodont type of dentition.
$(D)$ The oesophagus and the trachea open into the larynx.

Lymph tissues are present in which part of the alimentary canal?

The dental formula of an adult human is .......