Q. No.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
1. myenteric plexus
2. muscularis
3. submucosal plexus
4. serosa
HCl secreted by the gastric mucosa does not:
1. kill bacteria
2. catalyze the hydrolysis of peptide bonds
3. denature dietary proteins
4. cause the activation of pepsin
A high rate of red blood cell destruction, with elevated levels of bilirubin in the blood, causes ______.
| 1. diverticulitis | 2. gall stones |
| 3. jaundice | 4. lithotripsy |
The only exopeptidase amongst the following is:
1. trypsin
2. elastase
3. chymotrypsin
4. carboxypeptidase
Digestion of polymers is brought about by:
1. polymerization
2. absorption
3. condensation
4. hydrolysis
An accessory digestive gland amongst the following would be:
1. Pyloric glands
2. Crypts of Lieberkuhn
3. Salivary glands
4. Oxyntic glands
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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 |
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Most of the parasympathetic supply to the alimentary canal is by:
1. vagus nerve
2. thoracic spinal nerves
3. lumbar spinal nerves
4. sacral spinal nerves
What prevents GER [gastro esophageal reflux]?
1. lower esophageal sphincter
2. sphincter of Oddi
3. esophageal hiatus
4. glottis
A column-shaped cell found in the respiratory and intestinal tracts, which secretes the main component of mucus, is the:
| 1. G cell | 2. enterochromaffin-like cell |
| 3. parietal cell | 4. goblet cell |
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