Human Physiology Unit 04 Review C: Digestive Question Preview (ID: 37875)


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bile is produced by
a) hepatocytes
b) gall bladder cells
c) kupffer cells
d) sinusoids

collection and transport of lipids from the digestive tract is carried out by
a) the lymphatic system
b) the hepatic portal system
c) the enterohepatic system
d) the biliary apparatus

lipid digestion involves the coordinated action of
a) lipase, bile
b) hydrochloric acid, pepsin
c) amylase, bicarbonate
d) trypsin, brush border enzymes

peristalsis within the intestines is coordinated by
a) the enteric nervous system
b) the parasympathetic nervous system
c) the sympathetic nervous system
d) the somatic nervous system

Inhibition of exocrine pancreatic secretions would result in
a) decreased bile synthesis and secretion
b) decreased insulin secretion following meals
c) stimulation of enterokinase activity
d) presence of an acidic chyme

Wavelike, directional muscular contraction of the gastrointestinal tract is called
a) peristalsis
b) propulsion
c) segmentation
d) mastication

Pepsin would have the greatest activity
a) when the pH is less than 3
b) when the pH is greater than 3
c) immediately upon secretion
d) upon entering the duodenum

________ is required for the intestinal absorption of vitamin B12
a) intrinsic factor
b) pepsin
c) gastrin
d) calcium

why does the upper third of the esophagus have skeletal muscle
a) first phase of swallowing is voluntary
b) so you do not choke
c) so peristalsis can occur
d) to prevent gastro esophageal reflux

The mixing movement of the small intestine is called
a) segmentation
b) peristalsis
c) micturition
d) deglutition

Which of the following is NOT a structure of the small intestine that increases its surface area?
a) rugae
b) microvilli
c) villi
d) circular folds

Which of the following is NOT a section of the small intestine?
a) cecum
b) jejunum
c) ileum
d) duodenum

________ are large capillary spaces separating hepatic plates
a) sinusoids
b) portal triads
c) lobules
d) hepatocytes

digestive enzymes are often secreted in an inactive (zymogen) form in order to
a) prevent digestion of the GI tract itself
b) confuse physiology students
c) allow for regulation of their activity by target organs
d) they are less likely to trigger an autoimmune response

negative feedback control of HCl secretion in the gastric phase is mainly by
a) decrease in gastrin secretion and increase in somatostatin
b) increase in gastrin secretion
c) decrease in somatostatin secretion
d) increase in gastrin secretion and decrease in somatostatin secretion

disaccharides like maltose, lactose, sucrose are broken down by
a) brush border enzymes
b) pancreatic amylase
c) enterokinases
d) cholecystokinin

The transport of digested food into the blood or lymph is
a) absorption
b) deglutition
c) ingestion
d) secretion

the _____ stimulates decreased gastric motility
a) ileogastric reflex
b) GLP-1 reflex
c) gastroileal reflex
d) gastroduodenal reflex

________ is secreted by the ileum and colon and stimulates intestinal secretion of Cl- thereby causing elimination of NaCl and water in the feces
a) Guanylin
b) Motilin
c) Serotonin
d) Ghrelin

the two types of digestion are
a) mechanical; chemical
b) structural; functional
c) catabolic; anabolic
d) physical; enzymatic

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