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Multiple Choice Quiz
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Please answer all questions

1
The _____________ layer of the alimentary canal contains loose connective tissue, glands, blood and lymphatic vessels, and nerves.
A)mucosa
B)submucosa
C)muscular layer
D)serosa
2
Activities of the digestive system are generally increased by _________________ nervous stimulation.
A)sympathetic
B)parasympathetic
C)somatic
D)autonomic
3
The purpose of the soft palate is to __________________.
A)house extra taste buds
B)sense temperature of food before it is swallowed
C)produce saliva and enzymatic secretions
D)close off the nasal cavity during swallowing
4
Compared to the others listed below, which type of tooth is more likely to be involved in grinding food?
A)incisor
B)cuspid
C)premolar
D)molar
5
What mouth part helps to mix food with saliva, moves food toward the pharynx for swallowing, and houses taste receptor cells?
A)lips
B)palate
C)tongue
D)cheeks
6
Which salivary glands produce the most viscous saliva with lots of mucus?
A)sublingual glands
B)submandibular glands
C)parotid glands
D)serous cells
7
What initiates the swallowing reflex?
A)fear of choking on food
B)the tongue rolling the bolus to the pharynx
C)sensory receptors detecting the bolus in the pharynx
D)secretion of saliva at the thought of food
8
The main part of the stomach is the _______________ of the stomach.
A)cardiac region
B)fundic region
C)body
D)pyloric region
9
Intrinsic factor is secreted by which cells of the gastric glands?
A)mucous cells
B)chief cells
C)peptic cells
D)parietal cells
10
During which stage of gastric secretion do gastric glands actually begin secreting gastric juice?
A)cephalic phase
B)gastric phase
C)intestinal phase
D)enterogastric reflex
11
The pancreas secretes enzymes that enter the small intestine and chemically digest chyme. Choose the enzyme(s) that break(s) down fats.
A)carboxypeptidase
B)pancreatic lipase
C)trypsinogen
D)pancreatic amylase
12
What hormone does the small intestine release in response to acidic chyme?
A)cholecystokinin
B)secretin
C)digestin
D)gastrin
13
What is the primary purpose of the liver in aiding digestion?
A)produces digestive enzymes
B)produces alkaline solution to neutralize stomach acidity
C)produces bile to emulsify fats in the small intestine
D)produces substances that aid the large intestine in water absorption
14
How are the components of fats absorbed in the small intestine?
A)Specific receptor proteins carry fatty acids across the intestinal wall and into the bloodstream.
B)Fatty acids are transported by active transport to the bloodstream.
C)Components of lipids diffuse through small intestinal cell membranes, are reconstructed in the cells, then carried off by lacteals as chylomicrons.
D)Components of lipids diffuse through small intestinal cell membranes and into the bloodstream where they are carried to the liver for processing.
15
What is the primary function of the large intestine?
A)to complete the absorption of most nutrients
B)to house gas-producing bacteria
C)to rid the body of toxins
D)to compact, store, and eliminate feces
16
Where does the greatest amount of digestion occur?
A)small intestine
B)stomach
C)large intestine
D)liver
17
Which term does not belong with the others?
A)teeth
B)mastication
C)esophagus
D)tongue
18
Which gland is closest to the joint between the mandible and temporal bone?
A)sublingual
B)pancreas
C)submaxillary
D)parotid
19
The portion of a tooth below the gums is the _____.
A)dentin
B)crown
C)root
D)pulp
20
The enzyme salivary amylase begins to digest which molecules?
A)proteins
B)carbohydrates
C)lipids
D)nucleic acids
21
Where are the palatine tonsils located?
A)larynx
B)pharynx
C)trachea
D)esophagus
22
The surface area of the stomach is enhanced by the presence of folds called _____.
A)rugae
B)villi
C)microvilli
D)plicae
23
Where would the least amount of bacteria be found?
A)small intestine
B)colon
C)stomach
D)pharynx
24
What normally holds the intestines in position within the abdominal cavity?
A)mesentery
B)gravity
C)adipose
D)stomach muscles
25
The pancreatic duct connects to what part of the digestive tube?
A)jejunum
B)liver
C)ileum
D)duodenum
26
Which of these does not directly promote the hydrolysis of food?
A)villi
B)microvilli
C)submucosa
D)mucosa
27
The outer layer of the intestines is the ____
A)mucosa
B)serosa
C)submucosa
D)muscularis
28
Where are the lacteals located?
A)liver
B)pancreas
C)small intestine
D)large intestine
29
The appendix is attached to which of the following structures?
A)transverse colon
B)descending colon
C)ascending colon
D)cecum
30
Which of these vitamins is formed by bacteria in the colon?
A)C
B)D
C)B6
D)K







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