Glands of the gut are of three types as shown in the figure

Classify the following exzapmples of glands under X,Y and Z.
(i) Salivary gland (ii)Liver
(iii) Crypts of Lieberkuhn (iv) Brunner's gland
(v) Pancreas (vi) Gastric gland

Options

A. I,ii,v,iv,iii,vi
B. iii,iv,v,vi,I,ii
C. iii,v,I,ii,iv,vi
D. I,ii,v,iv,iii,vi

Answer

D

Explanation

The gut wall consists four distinct layer known as the serosa, musculris mucos, submucosa and mucosa. The gut wall contains glands whose linings are formed by invaginations of the epithelium linining the surface of the lumen. The given figures represent various gastric glands. Figure X represents various gastric glands. Figure X represents glands outside the gut. These include salivary glands, liver and pancreas. Figure Y represents glands in the submucosa and includes Brunner's glands. Figure Z represents glands in mucosa. These include gastric glands in stomach and crypts of Lieberkuhn at the base of vilus.