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Multiple Choice Questions (MCQs)
1. The large intestine is approximately:
A.1.5 m long
B. 0.5 m long
C. 2.5 m long
2. The mucosa of the large intestine:
A. Is folded to form villi
B. Has a smooth absorptive surface
C. Is not absorptive
3. Haustra are:
A. Pouches in the wall of the large intestine
B. Areas of smooth muscle
C. Pouches in the small intestine
4. Peristaltic movement of the large intestine is:
A. Slow and non-propulsive
B. Fast and propulsive
C. Governed by haustral contractions which occur 4 hourly
5. Haustral contractions occur:
A. Every 30 minutes
B. Every 4 hours
C. After food
6. Transit time is:
A. The time taken for food to travel from the stomach to the colon
B. The time taken for material to travel through the colon
C. Not dependent upon muscle activity of the colon
7. An increased transit time:
A. Allows an increased reabsorption of water
B. Decreases the reabsorption of water
C. Results in a larger volume of faecal material
8. Bulk forming laxatives:
A. Must be taken with additional fluid
B. Produce an effect within 8-12 hours
C. Taken at night to produce a morning bowel movement
9. Osmotic laxatives:
A. Retain fluid in the large intestine
B. Such as lactulose, can take up to 24 hours to have an effect
C. Should only be used for bowel clearance before surgery
10. Stimulant laxatives:
A. Increase motility of the large intestine
B. Should be used long term
C.
Correct fluid and electrolyte imbalace
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