The wall of the colon exhibits small sac-like structures formed due to contractions, which are called .......

In which of the following layers are Brunner's glands found?

The role of enamel is to:

The mucus-secreting cells of the intestinal mucosal epithelium are $...............$ .

The following diagram shows the duct system of the liver,gallbladder,and pancreas. Identify the ducts labeled $P, Q$,and $R$.

Match the names of glands listed under column $-I$ with the location given under column $-II$, choose the answer which gives correct combination of the alphabets of the two columns.

Column $-I$ (Glands)	Column $-II$ (Location)
$(A)$ Crypts of Lieberkuhn	$(p)$ Loop of duodenum
$(B)$ Pancreas	$(q)$ Stomach
$(C)$ Adrenal gland	$(r)$ Intestine
$(D)$ Gastric gland	$(s)$ Kidney