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