The pH optimal for pepsin is:
1. 1.8
2. 3.8
3. 6.8
4. 7.8

The proenzyme pepsinogen gets converted into the active enzyme pepsin on exposure to:
1. HCl
2. Enterokinase
3. Enterogastrone
4. Bile

Arrangement of teeth in each half of the upper and lower jaw is in theorder:
1. I, C, M, PM
2. I, C, PM, M
3. PM, M, C, I
4. M, PM, I, C

An investment of loose connective tissue entering the liver with the portal vessels and sheathing the larger vessels in their course through the organ is termed as:
1. Falciform ligament
2. Glisson’s capsule
3. Cantlie’s line
4. Ligamentumteres

The epithelium of the visceral organs is termed as:
1. Epidermis
2. Endothelium
3. Mesothelium
4. Mesentery

The opening of the stomach into the duodenum is guarded by:
1. Cardiac sphincter
2. Sphincter of Oddi
3. Pyloric sphincter
4. Ileocaecal sphincter

The longest part of the small intestine is:
1. Ilium
2. Duodenum
3. Jejunum
4. Ileum

Rugae are:
1. irregular folds in the stomach formed by mucosa
2. irregular folds in the stomach formed by submucosa
3. irregular folds in the stomach formed by muuscularis
4. regular folds in the stomach formed by mucosa

From the undigested food reaching it, the large intestine absorbs most of:
1. The vitamins
2. Bile salts
3. Water
4. Both 2 and 3

What is not true regarding vomiting?
1. It is the ejection of stomach contents through the mouth.
2. It is usually voluntary but can occur as a reflex action.
3. It is controlled by the vomit centre in the medulla oblongata.
4. A feeling of nausea precedes vomiting.