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Human Physiology Unit 04 Review C: Digestive
Test Description: Topic review
Instructions: Answer all questions to get your test result.
1) The mixing movement of the small intestine is called
A
segmentation
B
micturition
C
deglutition
D
peristalsis
2) why does the upper third of the esophagus have skeletal muscle
A
so peristalsis can occur
B
to prevent gastro esophageal reflux
C
so you do not choke
D
first phase of swallowing is voluntary
3) ________ is required for the intestinal absorption of vitamin B12
A
calcium
B
gastrin
C
pepsin
D
intrinsic factor
4) Pepsin would have the greatest activity
A
when the pH is greater than 3
B
when the pH is less than 3
C
upon entering the duodenum
D
immediately upon secretion
5) peristalsis within the intestines is coordinated by
A
the enteric nervous system
B
the parasympathetic nervous system
C
the somatic nervous system
D
the sympathetic nervous system
6) Inhibition of exocrine pancreatic secretions would result in
A
stimulation of enterokinase activity
B
decreased insulin secretion following meals
C
presence of an acidic chyme
D
decreased bile synthesis and secretion
7) Wavelike, directional muscular contraction of the gastrointestinal tract is called
A
segmentation
B
mastication
C
propulsion
D
peristalsis
8) collection and transport of lipids from the digestive tract is carried out by
A
the enterohepatic system
B
the lymphatic system
C
the hepatic portal system
D
the biliary apparatus
9) lipid digestion involves the coordinated action of
A
amylase, bicarbonate
B
hydrochloric acid, pepsin
C
trypsin, brush border enzymes
D
lipase, bile
10) bile is produced by
A
gall bladder cells
B
sinusoids
C
hepatocytes
D
kupffer cells
11) Which of the following is NOT a structure of the small intestine that increases its surface area?
A
circular folds
B
villi
C
rugae
D
microvilli
12) Which of the following is NOT a section of the small intestine?
A
cecum
B
ileum
C
duodenum
D
jejunum
13) ________ are large capillary spaces separating hepatic plates
A
portal triads
B
lobules
C
hepatocytes
D
sinusoids
14) digestive enzymes are often secreted in an inactive (zymogen) form in order to
A
prevent digestion of the GI tract itself
B
they are less likely to trigger an autoimmune response
C
confuse physiology students
D
allow for regulation of their activity by target organs
15) negative feedback control of HCl secretion in the gastric phase is mainly by
A
decrease in somatostatin secretion
B
decrease in gastrin secretion and increase in somatostatin
C
increase in gastrin secretion and decrease in somatostatin secretion
D
increase in gastrin secretion
16) disaccharides like maltose, lactose, sucrose are broken down by
A
enterokinases
B
pancreatic amylase
C
brush border enzymes
D
cholecystokinin
17) The transport of digested food into the blood or lymph is
A
ingestion
B
secretion
C
absorption
D
deglutition
18) the _____ stimulates decreased gastric motility
A
gastroileal reflex
B
gastroduodenal reflex
C
ileogastric reflex
D
GLP-1 reflex
19) ________ is secreted by the ileum and colon and stimulates intestinal secretion of Cl- thereby causing elimination of NaCl and water in the feces
A
Serotonin
B
Guanylin
C
Motilin
D
Ghrelin
20) the two types of digestion are
A
catabolic; anabolic
B
mechanical; chemical
C
structural; functional
D
physical; enzymatic
*select an answer for all questions
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