Chapter 64: Secretory Functions of the Alimentary Tract and Chapter 66: Physiology of Gastrointestinal Disorders

Chapter 64: Secretory Functions of the Alimentary Tract and Chapter 66: Physiology of Gastrointestinal Disorders

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

1. How does secretin stimulate the secretion of bicarbonate from the pancreas?

1. Closes potassium channels
2. Closes sodium channels
3. Decreases norepinephrine levels
4. Increases acetylcholine levels
5. Opens chloride channels

ANS: E

2. A 67-year-old man has heartburn and stomach pain. Endoscopy shows several small gastric ulcers in the corpus. Biopsies were positive for pylori, which promotes gastric ulcer formation by damaging which of the following?

1. Circular muscle layer
2. Gastric mucosal barrier
3. G cells
4. Myenteric plexus
5. Parietal cells

ANS: B

3. Which of the following decreases when salivary flow increases?

1. Bicarbonate concentration
2. Chloride concentration
3. Osmolarity
4. Potassium concentration
5. Sodium concentration

ANS: D

4. Which of the following leads to a decrease in salivary flow?

1. Chewing
2. Fear
3. Nausea
4. Smooth objects in the mouth

ANS: B