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! 

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Gastrointestinal Physiology Review MCQ - Part 5

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Question 1
The hormone, directly responsible for secretion of pancreatic ductule HCO3- and the synthesis upregulation of bile in the liver, is secreted itself from...
A
Ductule cells
B
Acinar cells
C
Bartholian glands
D
G cells
Question 2
Gastrin and HCl inhibition is triggered by which of the below hormones?
A
CCK
B
Secretin
C
Histamine
D
Noradrenaline
Question 2 Explanation: 
CCK and GIP (GDIP) both directly inhibit gastrin and HCl production.
Question 3
Proximal duodenal content is what form of tonic?
A
Hypertonic
B
Isotonic
C
Normotonic
D
Hypotonic
Question 3 Explanation: 
The luminal content of the proximal duodenum is hypertonic. This means that, unlike the isotonic large bowel contents, at this stage there is a propensity for water to be held onto (it has a high oncotic potential).
Question 4
Intestinal crypt cells secrete what type of substance?
A
Hypotonic
B
Hypertonic
C
Normotonic
D
Isotonic
Question 5
A lacteal is contained in a
A
Brush border
B
Microvillus
C
Villus
D
Mucosal cell
Question 6
How does a triacylglycerol molecule reach the liver from the lacteal?
A
HPV
B
Hepatic artery
C
Hepatic vein
D
Splenic vein
Question 7
Which of the following is not true of nutrient absorption in the small intestine?
A
The basolateral ATPase powers water transport
B
Maltase on the brush border assists in carbohydrate transport
C
Carbohydrates utilise secondary active transport and facilitated diffusion to pass the enterocyte's apical border
D
Monosaccharides leave the basolateral membrane via GLUT2 facilitated transport
E
Chymotrypsin is secreted from brush border cells
Question 8
Which of the following is true of nutrient absorption at the brush border?
A
There is a high intracellular concentration of Na+ as a result of ATPase activity
B
Aminopeptidase is synthesised by brush border cells
C
Free amino acids enter via facilitated diffusion
D
Ca++ passes down a strong concentration gradient through TRPV1
E
Most dietary iron is Fe++
Question 9
Patient has anaemia related to chronic hepcidin upregulation.  Which of the following is true?
A
TRPV1 transport will be downregulated
B
GLUT2 receptors will be upregulated
C
Ferrous iron cannot be transported by ferritin
D
Ferric iron cannot be transported by transferrin
Question 10
Which of the following is not true of fat absorption?
A
Is most exclusively the remit of the small bowel
B
Cholic and bile acid are major emulsifying agents at the brush border
C
Micelle external portion is electrochemically attracted to H2O molecules
D
The more potent lipase is derived from the gastric mucosa
E
Bile is reabsorbed in the terminal ileum after lipids have passively absorbed down their concentration gradients
Question 11
Endocytosis of the B12-IF complex occurs where?
A
Proximal duodenum
B
Distal duodenum
C
Jejunum
D
Proximal ileum
E
Terminal Ileum
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