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Simple Multiple Choice
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1
The main functions of the digestive system are
A)ingestion and digestion
B)propulsion and secretion
C)absorption and elimination
D)all of the above
2
The movement of digestion products, electrolytes, vitamins, and water across the GI tract epithelium and into the underlying blood and lymphatic vessels is called
A)ingestion
B)absorption
C)digestion
D)secretion
3
All of the following are organs of the digestive system except the
A)spleen
B)liver
C)tongue
D)esophagus
4
Which selection includes only accessory digestive organs?
A)salivary glands, thyroid gland, pancreas, liver
B)stomach, duodenum, pancreas, gallbladder
C)gallbladder, liver, pancreas, salivary glands
D)liver, thyroid gland, gallbladder, spleen
5
Movements in the small intestine that churn the materials being digested and mix them with intestinal secretions are called
A)peristalsis
B)pendular motility
C)segmentation
D)haustral churning
6
Which term describes the wave of muscular contraction that moves material through the GI tract toward the anus?
A)peristalsis
B)pendular motility
C)segmentation
D)haustral churning
7
Digestive functions of the tongue include
A)manipulating and mixing ingested materials during chewing
B)helping compress partially digested food to form a bolus
C)assisting in the swallowing process
D)all of the above
8
The three pairs of multicellular salivary glands that secrete into the oral cavity are the ____________ glands.
A)alpha, beta, and gamma
B)parotid, submandibular, and sublingual
C)palatine, lingual, and pharyngeal
D)serous, mucous, and mixed
9
What is the mineralized matrix, similar to bone but harder, that forms the primary mass of each tooth?
A)enamel
B)dentin
C)cementum
D)pulp
10
Which selection doesnot correctly pair a type of tooth with its description?
A)incisors, one or two roots and spoon-shaped
B)canines, one root and conical with a pointed tip
C)premolars, one or two roots and flat crowns with cusps
D)molars, three or more roots and large, broad, flat crowns
11
Which mesentery covers most of the abdominal organs, extending inferiorly like an apron from the greater curvature of the stomach?
A)mesentery proper
B)lesser omentum
C)greater omentum
D)mesocolon
12
From deep to superficial, what are the tunics of the intraperitoneal portions of the GI tract?
A)serosa, muscularis, submucosa, and mucosa
B)mucosa, submucosa, muscularis, and serosa
C)adventitia, muscularis, submucosa, and mucosa
D)mucosa, submucosa, muscularis, and adventitia
13
In which of the following selections are the GI tract organs or regions correctly matched with the type of epithelium that lines them?
A)oral cavity and esophagus; stratified cuboidal
B)stomach and small intestine; stratified squamous
C)cecum, colon, and rectum; simple columnar
D)all of the above
14
Within the mucous membrane of the GI tract, the layer of areolar connective tissue is called the
A)mucosal lining
B)lamina propria
C)muscularis mucosae
D)submucosa
15
Which tunic of the GI tract typically contains an inner circular layer and an outer longitudinal layer, with the myenteric nerve plexus in between?
A)muscularis
B)mucosa
C)submucosa
D)adventitia
16
The esophagus enters the abdominal cavity through an opening in the diaphragm, the ____________, before it connects to the stomach.
A)diaphragmatic foramen
B)thoracic canal
C)cardiac orifice
D)esophageal hiatus
17
Histological features of the esophageal wall include
A)a mucosa lined with stratified cuboidal epithelium
B)submucosal glands that produce a thin, watery fluid
C)a single layer of skeletal muscle in the muscularis
D)an outer fibrous layer, the adventitia, with no serosa
18
What are the three phases of the swallowing process?
A)mastication, eruption, and dentition
B)oral, cranial, and pharyngeal
C)voluntary, pharyngeal, and esophageal
D)cardiac, gastric, and pyloric
19
Which digestive organ mechanically and chemically transforms a food bolus into chyme?
A)esophagus
B)stomach
C)small intestine
D)large intestine
20
Which list proceeds from the superior to the inferior end of the stomach?
A)pylorus, fundus, cardia, body
B)cardia, body, fundus, pylorus
C)cardia, fundus, body, pylorus
D)body, cardia, pylorus, fundus
21
The prominent folds of the mucosa that nearly disappear when the stomach expands are the
A)gastric pits
B)rugae
C)plicae
D)omenta
22
From the superior end downward, the three segments of the small intestine are the
A)ileum, duodenum, and jejunum
B)duodenum, jejunum, and ileum
C)jejunum, ileum, and duodenum
D)duodenum, ileum, and jejunum
23
What is the function of the villi in the small intestine?
A)to decrease the amount of exposed surface
B)to facilitate enzyme retention and dispersal
C)to increase the surface area for absorption and secretion
D)to sweep particles across the surface with wavelike actions
24
Which sequence lists the regions of the large intestine in order, from the end of the ileum to the anus?
A)cecum, rectum, anal canal, colon
B)colon, rectum, anal canal, cecum
C)cecum, colon, rectum, anal canal
D)colon, cecum, rectum, anal canal
25
Arrange the segments of the colon in the sequence through which digested material passes prior to defecation: (1) sigmoid (2) transverse (3) descending (4) ascending
A)4, 2, 3, 1
B)2, 1, 4, 3
C)1, 3, 4, 2
D)3, 1, 2, 4
26
The mucosa of the large intestine is characterized by
A)lack of intestinal villi
B)numerous goblet cells and intestinal glands
C)many lymphatic nodules and cells in the lamina propria
D)all of the above
27
Production of bile is one of several important functions of the
A)gallbladder
B)liver
C)pancreas
D)small intestine
28
Bile is stored and concentrated in the
A)gallbladder
B)liver
C)biliary apparatus
D)duodenum
29
Which hormones stimulate the production of pancreatic juice and bicarbonate?
A)angiotensin and epinephrine
B)gastrin and insulin
C)cholecystokinin and secretin
D)insulin and glucagon
30
Age-related changes in the digestive system include which of the following?
A)reduced secretion of mucin, enzymes, and acid
B)decreased replacement of epithelial cells
C)diminished muscular tone and GI tract motility
D)all of the above







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