Populations subsisting primarily on corn would likely to suffer from:

1. PEM

2. Pellagra

3. Bleeding disorders

4. Beri beri

Which of the following glandular secretions involved in digestion would be most likely released initially as inactive precursors ?

(1) protein-digesting enzymes

(2) fat-solublizing bile salts

(3) acid-neutralising bicarbonate

(4) hormones such as gastrin

What prevents the backflow of fecal matter into the small intestine?

1. Ileo-caecal valve

2. Sphincter of Boyden

3. Meckel's diverticulum

4. Plicae semilunaris

The parietal cells or the oxyntic cells located in the stomach's gastric pits mainly secrete:-
1. HCI and Intrinsic factor
2. Pepsinogen and Gastric lipase
3. Pepsinogen and Pro-rennin
4. Gastrin and Mucus

The mucosal layer in the stomach form irregular folds known as:-
1. villi
2. lumen
3. rugae
4. crypts of Lieberkuhn

What regulates the opening of oesophagus into the stomach?

1. A membranous valve

2. A muscular sphincter

3. A mesodermal septum

4. A cartilaginous flap

Muscularis layer in the wall of the alimentary canal is formed by smooth muscles usually arranged into:-

1. an inner circular and an outer longitudinal layer.
2. an inner longitudinal and an outer circular layer.
3. both circular layers
4. both longitudinal layers

Which of the following gastric secretory cells is correctly matched with its secretion(s)?

1. Chief cells - gastrin

2. parietal cells -- hydrochloric acid and intrinsic factor

3. enteroendocrine cells -- mucus and hormones

4. mucous cells -- pepsinogen and mucus

Sphincter of Oddi will guard the opening of

1. A

2. B

3. C

4. D

The intrinsic nervous system that is responsible for peristalisis is present in which part shown in the given transverse section of the human gut ?

1. A

2. B

3. C

4. D