Submucosal glands that secrete mucus are characteristic of the
A) ileum.
B) pancreas.
C) liver.
D) jejunum.
E) duodenum.
E. duodenum
During the cephalic phase of gastric secretion,
A) the intestinal reflex inhibits gastric emptying.
B) the stomach responds to distention.
C) production of gastric juice slows down.
D) secretin inhibits parietal and chief cells.
E) there is an increased f
E. There is an increased flow action potentials along the vagus nerve to the stomach
Waves of muscular contractions that propel the contents of the digestive tract are called
A) pendular movements.
B) mastication.
C) peristalsis.
D) churning movements.
E) segmentation.
C. Peristalsis
In the center of a liver lobule there is a
A) hepatic duct.
B) portal area.
C) portal vein.
D) sinusoid.
E) central vein.
E. central vein
Which of these descriptions best matches the term gastrin?
A) stimulates pancreas to secrete bicarbonate-rich fluid
B) where pancreatic juice and bile enter duodenum
C) stimulates gastric secretion
D) causes gall bladder to contract
E) carries absorbed su
C. stimulates gastric secretion
Which of the following contains adipose tissue and provides padding for the anterior and lateral
portions of the abdomen?
A) falciform ligament
B) diaphragm
C) mesentery proper
D) lesser omentum
E) greater omentum
E. greater omentum
Functions of teeth include
A) cutting.
B) clipping.
C) crushing.
D) tearing.
E) all of the above
E. all of the above
The roof of the oral cavity is formed by the
A) vestibule.
B) hard palate.
C) soft palate.
D) A, B, and C
E) B and C only
E. B and C only
The root of a tooth is covered by
A) pulp.
B) cementum.
C) enamel.
D) the root canal.
E) dentin.
B. cementum
________ are pointed teeth that are adapted for tearing and slashing.
A) Bicuspids
B) Cuspids
C) Premolars
D) Incisors
E) Molars
B. cuspids
The activities of the digestive system are regulated by
A) the contents of the digestive tract.
B) intrinsic nerve plexuses.
C) parasympathetic and sympathetic neurons.
D) hormones.
E) all of the above
E. all of the above
Which of the following is a function of the tongue?
A) secretion of mucins
B) sensory analysis
C) mechanical processing
D) manipulation to assist with chewing
E) all of the above
E. all of the above
The oral mucosa has ________ epithelium.
A) stratified squamous
B) stratified columnar
C) pseudostratified
D) simple squamous
E) transitional
A. stratified squamous
The absorption of some sugars in the small intestine involves
A) diffusion.
B) pinocytosis.
C) phagocytosis.
D) osmosis.
E) cotransport
E. cotransport
The fusion of the hepatic duct and the cystic duct forms the
A) bile canaliculus.
B) hepatic portal vein.
C) porta hepatis.
D) common pancreatic duct.
E) common bile duct.
E. common bile duct
Each of the following organs is a component of the digestive tract, except the
A) bladder.
B) pharynx.
C) colon.
D) stomach.
E) esophagus.
A. bladder
The esophagus has several variations from the standard plan of the gut tube. These include
A) epithelium of mucosa is stratified squamous.
B) epithelium of mucosa is simple columnar.
C) muscularis externa may be striated muscle.
D) A and C only
E) B and C
D. A and C only
Sandwiched between the layer of circular and longitudinal muscle in the muscularis externa is the
A) submucosa.
B) submucosal plexus.
C) muscularis mucosa.
D) myenteric plexus.
E) mucosa.
D. myenteric plexus
If digestion of a carbohydrate results in equal amounts of glucose and galactose, this carbohydrate
is probably
A) maltose.
B) lactose.
C) sucrose.
D) glycogen.
E) cellulose.
B. lactose
Functions of the stomach include all of the following, except
A) denaturation of proteins.
B) mechanical breakdown of food.
C) initiation of protein digestion.
D) storage of ingested food.
E) absorption of triglycerides.
E. absorption of triglycerides
Which layer of the digestive tract has a dense irregular connective tissue that surrounds the
muscularis mucosae?
A) submucosa
B) digestive epithelium
C) mucosa
D) lamina propria
E) muscularis mucosae
A. submucosa
All of the following are true of the intestinal phase of gastric digestion, except that it
A) involves both neural and endocrine reflexes.
B) helps ensure that the functions of the small intestine proceed with relative efficiency.
C) functions to control
E. precedes the gastric phase
The ________ are double sheets of peritoneal membrane that suspend the visceral organs and carry nerves, lymphatics, and blood vessels.
A) lamina propria
B) adventitia
C) serosa
D) mesenteries
E) fibrosa
D. mesenteries
The taenia coli are
A) longitudinal bands of smooth muscle in the colon wall.
B) tears of the colon.
C) ridges in the mucosa of the colon.
D) tumors normally confined in the sigmoid colon.
E) polyps that obstruct the sigmoid colon.
A. longitudinal bands of smooth muscle in the colon wall
The exocrine portion of the pancreas is composed of
A) pancreatic crypts.
B) islets of Langerhans.
C) pancreatic acini.
D) triads.
E) pancreatic lobules.
C. pancreatic acini
What provides access for blood vessels entering and leaving the liver?
A) mesentery proper
B) falciform ligament
C) diaphragm
D) greater omentum
E) lesser omentum
E. lesser omentum
The gastroileal reflex
A) promotes gastric secretion.
B) decreases peristaltic activity.
C) is relayed through the CNS.
D) empties the duodenum.
E) moves some chyme to the colon.
E. moves some chyme to the colon
The ________ gland empties into the oral cavity at the level of the second upper molar.
A) submandibular
B) parotid
C) sublingual
D) submaxillary
E) vestibular
D. submaxillary
Powerful peristaltic contractions that occur a few times each day in the colon are called
A) haustral churning.
B) mass movements.
C) defecation.
D) pendular movements.
E) segmentation.
B. mass movements
The connection of the anterior portion of the tongue to the underlying epithelium is the
A) faux.
B) lingual frenulum.
C) glossal septum.
D) labial frenulum.
E) uvula.
B. lingual frenulum