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

Assertion: Gastrin is a peptide hormone that stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach.
Reason: It acts on enterochromaffin like cells that release histamine which stimulates the parietal cells.

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: One serious side effect of a vagotomy[cutting of vagus nerve] is a vitamin B₁₂ deficiency later in life that is similar to pernicious anemia.
Reason: The vagus normally stimulates the stomach's parietal cells to secrete acid and intrinsic factor.

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.

The only exopeptidase amongst the following is:
1. Carboxypeptidase
2. Chymotrypsin
3. Trypsin
4. Elastase

Perhaps the only function of stomach that appears to be essential for life is the:
1. bactericidal action of HCl
2. digestion of proteins
3. absorption of drugs like acetyl salicylic acid
4. secretion of intrinsic factor

Amongst the enteroendocrine cells, histamine is secreted by:

1. Enterochromaffin cells

2. Enterochromaffin like cells

3. I cells

4. D cells