The opening of the stomach into the duodenum is guarded by:
1. Cardiac sphincter
2. Sphincter of Oddi
3. Pyloric sphincter
4. Ileocaecal sphincter
Which layer in the wall of the gastrointestinal tract has an inner circular and outer longitudinal layer?
| 1. lamina propria | 2. muscularis mucosa |
| 3. submucosa | 4. muscularis |
An innermost oblique muscle layer is present in the wall of:
| 1. Oesophagus | 2. Stomach |
| 3. Ascending colon | 4. Rectum |
Villi are supplied with a network of capillaries and a large lymph vessel called the:
| 1. Portal vessel | 2. Lacteal |
| 3. Thoracic duct | 4. Cisterna chyli |