Review, and challenge, are an important part of learning. This quiz is part of a set that will span the abdominal physiology and anatomy to challenge your synoptic linking ability. Good luck!
Reviewed by: awaiting review
Gastrointestinal Physiology Review MCQ - Part 7
Congratulations - you have completed Gastrointestinal Physiology Review MCQ - Part 7.
You scored %%SCORE%% out of %%TOTAL%%.
Your performance has been rated as %%RATING%%
Your answers are highlighted below.
Question 1 |
Distention of which mural structure causes occlusion of the ileocaecal valve?
Jejunum | |
Ascending colon | |
Ileum | |
Duodenum | |
Caecum |
Question 1 Explanation:
Mural is a commonly used term in histology to describe the wall of something - an example being that Crohn's can be distinguished from ulcerative colitis by the former having transmural inflammatory signs verses just mucosal changes in UC.
Question 2 |
For 150g of stored faeces, how much is water?
110g | |
120g | |
100g | |
90g | |
80g |
Question 3 |
Chyme undergoes propulsion and retropulsion in the large bowel. This is termed?
Haustrulation | |
Sacculation | |
Peristalsis | |
Mass migratory movement | |
Migrating motor complex |
Question 4 |
Chyme undergoes propulsion and retropulsion in the large bowel. What is the purpose of this process?
Absorption of water | |
Absorption of glucose | |
Absorption of bile acid | |
Absorption of lecithin | |
Absorption of cobalamin |
Question 5 |
Propulsive movement occurs on a large-order scale multiple times a day in the large intestine. In this circumstance, what is the initial trigger?
CCK | |
Secretin | |
Motilin | |
Active mechanoreception stimulation of the gastric mucosa | |
Duodenal content peristalsis |
Question 6 |
What is the initial response of the external anal sphincter to the defecation reflex?
Dilation | |
Contraction | |
Relaxation | |
There is no initial change | |
Involvement in the peristaltic wave |
Question 7 |
A patient is recovering from a stroke that has damaged descending fibres involved in the conscious regulation of defecation. What reflex has the patient lost?
Closing of the internal anal sphincter | |
Closure of the external anal sphincter | |
Opening of the internal anal sphincter | |
Reverse peristalsis | |
Inhibition of the anal canal's smooth muscle cellular contraction |
Question 8 |
The majority of cell type in the colonic mucosa is
Cuboidal | |
Columnar | |
Squamous | |
Transitional | |
Stratified cuboid |
Question 9 |
The chloride shift within the large intestine occurs
Across the apical border into the cell | |
Across the apical border out of the cell | |
Across the basolateral border into the cell | |
Across the basolateral border out of the cell | |
There is no chloride shift in the large intestine |
Question 10 |
Ceftriaxone risks death of microbiota in the large intestine more than other regions because
Ceftriaxone is more efficacious in this region | |
The drug is actively transported from the enterocyte | |
There are preferential complementary receptors for ceftriaxone macromolecule in the ascending and transverse colon | |
The large intestine has a higher pH than the more proximate bowel | |
The large intestine contains more substrate for facultative anaerobic bacteria |
Question 10 Explanation:
The large bowel is less acidic than other regions of the intestine. This means that they are a more hospitable environment for gut bacteria. This means, consequently, that antibiotic damage to microbiota is more likely to occur where the vast majority of the bacteria are - the large intestine.
Once you are finished, click the button below. Any items you have not completed will be marked incorrect.
There are 10 questions to complete.