Enterohepatic circulation is responsible for the recycling of how much bile acid?
Anonymous Quiz
11%
90%
0%
. 80%
86%
95%
2%
70%
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Gastrin can stimulate Hcl secretion by:
Anonymous Quiz
8%
acting on muscarinic receptors on parietal cells
3%
Release of cGMP as 2nd messenger
79%
Indirect action via stimulation of histamine release from ECL cells.
11%
Release of cAMP as a 2nd messenger
A 50-year-old woman presents to the emergency room with epigastric abdominal pain associated with nausea and vomiting. She is diagnosed with acute pancreatitis. Which of the following best describes pancreatic function in this patient?
Anonymous Quiz
92%
Serum lipase and amylase would be increased.
0%
Secretin inhibits secretion from the pancreas.
3%
Serum amylase would be decreased in this patient.
6%
Serum lipase would be decreased in this patient.
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Bile is produced by the liver continuously. (Which of the following is true?)
Anonymous Quiz
14%
Bile functions to catalyze digestive processes in a manner like enzymes
81%
Bile salts emulsify large droplets of triglycerides
4%
Bile salts reduce the surface area of droplets of triglycerides
1%
95% of bile salts are lost in the feces
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Inhibition of the myenteric plexus leads to which of the following?
Anonymous Quiz
92%
Decreased gut motility
4%
Hyperacidity in the stomach.
2%
Diarrhea
2%
Increased secretin hormone release from the duodenum.
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Site of action of Omeprazole is:
Anonymous Quiz
3%
Active H and CL cotransport
4%
CL/HCO3 exchange
12%
Na/K pump
82%
H/K ATPase
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After secretion of trypsinogen into the duodenum, the enzyme is converted into its active form, trypsin, by which of the following?
Anonymous Quiz
14%
Chymotrypsin
81%
Enteropeptidase
4%
Procarboxypeptidase
1%
Pancreatic lipase
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With maximum salivary secretion rate results in which change in ionic composition?
Anonymous Quiz
12%
K increases
9%
CL decreases
31%
HCO3 concentration increases
48%
Na concentration increases
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Which of the following stimulates pancreatic secretion rich in bicarbonates?
Anonymous Quiz
4%
somatostatin
3%
Gastrin
26%
CCK
67%
Secretin
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All the following causes secretion of gastric juice during cephalic phase except:
Anonymous Quiz
4%
Food in mouth
3%
Sight of food
86%
Food in stomach
8%
Thought of food
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The metabolic rate decreases in all the following, except:
Anonymous Quiz
8%
Prolonged fasting
2%
During sleep
89%
During pregnancy
2%
Old age
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In the body, metabolism of 100g of protein would produce approximately:
Anonymous Quiz
5%
1 Kcal
11%
41 Kcal
73%
410 Kcal
11%
4100 Kcal
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The mechanism of fever reduction by aspirin is
Anonymous Quiz
3%
shivering
3%
stimulation of cyclooxygenase
85%
inhibition of prostaglandin synthesis
8%
increasing the hypothalamic set-point temperature
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For the average healthy, normal male aged 20, the:
Anonymous Quiz
19%
Body fat is about 30 per cent of total body weight.
15%
Skin-fold thickness is higher than in a female.
54%
Heart rate during maximal exertion is about 200 beats per minute.
12%
Cardiac output during maximal exertion is about 10 litres per minute.
A patient with liver cirrhosis presents to the emergency room with hematemesis After stabilizing him with IV fluids, the gastroenterolo- gist administers an analog of which of the following agents to inhibit gastric acid secretion and visceral blood flow?
Anonymous Quiz
0%
Acetylcholine
10%
Gastrin
3%
Histamine
87%
Somatostatin
The rate of gastric emptying increases with an increase in which of the following?
Anonymous Quiz
3%
. Acidity of duodenum
5%
Fat content of duodenum
5%
Intraduodenal volume
88%
Intragastric volume
Which of the following stimulates HCI in gastric secretion?
Anonymous Quiz
2%
Secretin
95%
Gastrin
2%
CCK
0%
Motilin
Enterokinase helps in the conversion of
Anonymous Quiz
0%
Lactose to Sucrose
90%
Trypsinogen into trypsin
10%
Pepsinogen into pepsin
0%
Proteins into polypeptide
About pancreatic secretion
Anonymous Quiz
15%
Pancreatic acinar cells contain trypsin
73%
When acid enters the duodenum it stimulates pancreatic secretion
8%
Pancreatic secretion is inhibited by gastrin secreted by the G-cells of the antrum
5%
Cholecystokinin inhibits secretion from the exocrine pancreas
Which of the following statements is true?
Anonymous Quiz
0%
Bile is diluted in the gallbladder
11%
Bile salts are formed from the breakdown products of hemoglobin
87%
Bile salts are mostly absorbed in the distal ileum
3%
The gallbladder can produce 500-1000 mL of bile per day