Situated between the circular muscle layer and the longitudinal muscle layer in the lower esophagus, stomach, and intestines, the major nerve supply to the gastrointestinal tract that controls GI tract motility is the:
1. myenteric plexus
2. muscularis
3. submucosal plexus
4. serosa

What is true about the Peyer's patches in the intestinal wall?

1. They are lymphoid nodules located in the ileum

2. They are lymph nodes located in the duodenum

3. They protect the large intestine from bacteria in the small intestine, which might pass through the ileocecal valve

4. They are lymphoid nodules located in the ileum and protect the large intestine from bacteria in the small intestine, which might pass through the ileocecal valve

Assertion: The microvilli of small intestinal epithelium are important for the final step of digestion of carbohydrates especially.
Reason: The microvilli that constitute the brush border have enzymes for this final part of digestion anchored into their apical plasma membrane as integral membrane proteins.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: In the fetus, the liver does not perform the normal digestive processes.
Reason: In infants nutrients are received directly from the mother via the placenta.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Consider the following two statements regarding the epiglottis:
I. It is made of hyaline cartilage
II. It does not have any taste buds

1. I is true but II is false
2. I is false but II is true
3. Both I and II are true
4. Both I and II are false

Consider the following statements regarding the constituents of the human tooth:
I. Enamel is the hardest part of the tooth and is secreted by the ameloblasts
II. Dentin does not contain collagen and is secreted by odontoblasts
III. Cementum is a bone-like substance secreted by cementoblasts
IV. Pulp is called as the “nerve” of the tooth
The incorrect statement/s is/are:

1. II alone
2. IV alone
3. II and IV only
4. I and III only

Parasympathetic stimulation of stomach leads to all the following except:
1. secretion of somatostatin
2. inhibition of somatostatin
3. secretion of gastrin
4. promotion of histamine

Identify the correct statement regarding the transport of the absorbed products of fat digestion:

1. Free fatty acids and monoglycerides are transported to the liver via the hepatic portal vein

2. Triglycerides are transported through the lymphatics in lipoproteins called LDL

3. Triglycerides are transported through the lymphatics as part of lipoproteins called chylomicrons

4. Free fatty acids and monoglycerides are transported through the lymph as part of lipoproteins called chylomicrons

Identify the incorrect statement:

1. Increasing acidity in the stomach stimulates endocrine cells in the gastric epithelium to produce somatostatin that inhibits further HCl secretion

2. HCl production increases in response to carbohydrates entering the stomach

3. HCl secretion is inhibited when acidity increases in the small intestine

4. Gastrin, histamine, and acetylcholine all act to increase HCl secretion

A young infant may be feeding entirely on mother's milk, which is white in colour but the stools, which the infant passes out are quite yellowish. What is this yellow colour due to?
1. Intestinal juice
2. Bile pigments passed through bile juice
3. Undigested milk protein casein
4. Pancreatic juice poured into duodenum