Site MapHelpFeedbackDifficult Quiz
Difficult Quiz
(See related pages)

1
The nerve plexus that contains neurons that are primarily concerned with regulating the motility within the GI tract is the _____________ plexus.
A)myenteric
B)muscularis
C)submucosal
D)serosa
2
Which of the following cell types is found in an accessory digestive organ?
A)beta cells
B)G cells
C)goblet cells
D)parietal cells
3
The hydrochloric acid secreted by the parietal cells of the stomach will do all of the following except _____________.
A)kill microbial organisms
B)catalyze the hydrolysis of peptide bonds
C)denature dietary proteins
D)stimulate the activation of pepsin
4
Acute gastritis can result from _________________.
A)the presence of Helicobacter pylori
B)deficiency of bicarbonate
C)deficient secretion of hydrochloric acid
D)histamine secretion
5
The absorptive surface area of the small intestine is increased by all of the following except _____________.
A)villi
B)microvilli
C)crypts of Lieberk<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073378119/601387/U_entity.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>hn
D)plicae circulares
6
More __________ is absorbed by the duodenum and the jejunum than by the ileum.
A)vitamin B12
B)water
C)carbohydrate
D)bile salts
7
Pacemaker cells of the small intestine that regulate slow wave contractions are ________.
A)nerve cells
B)smooth muscle cells
C)interstitial cells of Cajal
D)part of the myenteric plexus
8
Bile contains all of the following components except ________________.
A)lecithin
B)bilirubin
C)cholesterol
D)urobilinogen
9
The detoxification of toxic compounds such as benzopyrene and dioxine by the liver utilizes enzymes that ______________.
A)contain respiratory cytochromes
B)remove hydroxyl groups
C)contain P450 cytochromes
D)through conjugation, produce cationic molecules
10
In humans, cholic acid and chenodeoxycholic acid are principle _____________.
A)bile acids
B)bile pigments
C)bile globulins
D)conjugated bilirubin
11
A high rate of red blood cell destruction, with elevated levels of bilirubin in the blood, causes _____________________.
A)diverticulitis
B)gallstones
C)jaundice
D)lithotripsy
12
The liver detoxifies ammonia by converting it to _______________.
A)bilirubin
B)urea
C)uric acid
D)nothing, since ammonia is processed by the kidneys and not the liver
13
Pancreatic juice contains a wide variety of compounds. Which of the following is involved in the degradation of carbohydrates?
A)insulin
B)trypsin
C)amylase
D)bicarbonate
14
Which of the following enzymes will hydrolyze proteins by removing amino acids from the end of the molecules and not by hydrolyzing bonds within the molecules?
A)trypsin
B)elastase
C)chymotrypsin
D)carboxypeptidase
15
Lipoprotein lipase will _____________.
A)emulsify dietary lipids so they can be digested more efficiently
B)remove triglycerides from chylomicrons in the blood
C)form micelles in the small intestine
D)digest lipids so they can be absorbed by the intestinal cells
16
Excessive secretion of the guanylin could cause _____________.
A)ulcers
B)excessive bile secretion
C)decreased gastric emptying
D)loss of sodium and chloride and water in the feces
17
Duodenal ulcers in patients with Zollinger-Ellison syndrome result from inadequate bicarbonate secretion to buffer stomach HCl entering the duodenum.
A)True
B)False
18
The stomach is so well protected against its own acid and enzymes that it has a very low rate of cell death and slow cell replacement.
A)True
B)False
19
The liver receives all its blood from the hepatic portal vein.
A)True
B)False
20
The capillaries in the hepatic sinusoids are somewhat unique in that there is an excessively thick basement membrane associated with these capillaries.
A)True
B)False







Human Physiology, 12eOnline Learning Center

Home > Chapter 18 > Difficult Quiz