Question 1
Question
The more common term for deglutition is
Answer
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chewing
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swallowing
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mechanical digestion
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vomiting
Question 2
Question
Which of the following organs has a mucosal layer that is composed of columnar epithelium with a brush border of microvilli to enhance absorption?
Answer
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Esophagus
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Large intestine
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Small intestine
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Stomach
Question 3
Question
As the food in the stomach is repeatedly squeezed and mixed with gastric juices, it is converted into a semifluid material called:
Question 4
Question
Hydrochloric acid is released from cells in the:
Answer
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stomach
-
small intestine
-
large intestine
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All of the above
Question 5
Question
The greatest proportion of the tooth shell consists of
Answer
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enamel
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dentin
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gingivae
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cementum
Question 6
Question
The flap of tissue suspended from the midpoint of the posterior border of the soft palate is the
Answer
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fauces
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frenulum
-
uvula
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gingiva
Question 7
Question
Which of the following stomach cell types is not correctly matched with its function
Answer
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mucus cells produce mucus
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parietal cells produce hydrochloric acid
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chief cells produce pepsinogen
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endocrine cells produce intrinsic factor
Question 8
Question
Bile component essential for emulsification
Answer
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bile salts
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bile pigments
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bilirubin
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all of these
Question 9
Question
The disaccharide maltose is made up of
Answer
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Glucose and glucose
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Glucose and fructose
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Glucose and galactose
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None of the above
Question 10
Question
Bile contains all the following substances except:
Answer
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bile salts
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lecithin
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amylase
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bilirubin
Question 11
Question
Triglyceride is also known as:
Answer
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sugar
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polysaccharide
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protein
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fat
Question 12
Question
The last function of the digestive system is:
Answer
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elimination
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absorption
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motility
-
secretion
Question 13
Question
Decreased levels of bile salts in bile would interfere with digestion of:
Answer
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protein
-
fat
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disaccharide
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complex carbohydrate
Question 14
Question
Cellulose often remains undigested. It belongs to this group :
Question 15
Question
The process of fat emulsification consists of
Answer
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chemically breaking down fat molecules
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the secretion of digestive juices for fat digestion
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absorption of fats
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breaking fats into small droplets
Question 16
Question
Pancreatic juice contains which of the following:
Answer
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amylase
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trypsin
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peptidase
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lipase
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all of the above
Question 17
Question
Receives food directly from the oral cavity?
Answer
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nasopharynx
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oropharynx
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laryngopharynx
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esophagus
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stomach
Question 18
Question
Which of the following organs is part of the GI tract:
Answer
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teeth
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salivary gland
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liver
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gall bladder
-
stomach
Question 19
Question
Which of the following is not an anatomical part of the small intestine?
Answer
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Duodenum
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Cecum
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Ileum
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Jejunum
Question 20
Question
Which structure helps anchor the tongue to the floor of the mouth?
Answer
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Philtrum
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Plica fimbriata
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Lingual frenulum
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Fauces
Question 21
Question
An incision into the wall of the GI tract would cut, in order, from outside to inside:
Answer
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mucosa, submucosa, muscularis, and serosa
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serosa, submucosa, muscularis, and mucosa
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serosa, muscularis, submucosa, and mucosa
-
muscularis, submucosa, mucosa, and serosa
Question 22
Question
The hard palate consists of portions of
Answer
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four bones: three maxillae and one palatine
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two bones: one maxillae and one palatine
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four bones: two maxillae and two palatines
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two bones: two palatines
Question 23
Question
Which of the following is true about the main organs of the digestive system?
Answer
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They are involved in chemical digestion only, not mechanical digestion.
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They do not produce the enzymes used in digestion; enzymes are produced by associate organs.
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They form a tube through the body called the alimentary canal.
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All of the above are true of the main organs of digestion.
Question 24
Question
The first phase of deglutition or swallowing occurs in the:
Answer
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pharynx
-
larynx
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esophagus
-
oral cavity
Question 25
Question
The gastric phase of gastric juice secretion is triggered by
Answer
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sight, thought, smell of food
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entry of protein rich foods into stomach
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entry of chyme into small intestine
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entry of chyme into large intestine
Question 26
Question
Digestion uses the following methods in this order to accomplish its function.
Answer
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Ingestion, absorption, secretion
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Ingestion, secretion, absorption
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Absorption, secretion, ingestion
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Absorption, ingestion, secretion
Question 27
Question
Which of the following protein-digesting enzymes is made in the stomach?
Answer
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Trypsin
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Chymotrypsin
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Pepsin
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Peptidase
Question 28
Question
Mechanical digestion:
Answer
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chewing
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peristalsis
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segmentation
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motility
-
all of the above
Question 29
Question
Gastric juice contains all the following substances except:
Answer
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intrinsic factor
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enterokinase.
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hydrochloric acid
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pepsin
Question 30
Question
The contents of the stomach are emptied into the:
Answer
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duodenum
-
ileum.
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jejunum
-
cecum
Question 31
Question
Which layer of the digestive tract is in direct contact with the food consumed:
Answer
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mucosa
-
muscularis
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submucosa
-
serosa
Question 32
Question
The cardiac sphincter controls the flow of food into:
Answer
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esophagus
-
small intestine
-
stomach
-
large intestine
Question 33
Question
Which of the following is true about bile?
Answer
-
It is made in the gallbladder, stored in the gallbladder, and emptied into the duodenum.
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It is made in the liver, stored in the gallbladder, and emptied into the stomach.
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It is made in the gallbladder, stored in the liver, and emptied into the jejunum.
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It is made in the liver, stored in the gallbladder, and emptied into the duodenum.
Question 34
Question
Which of the following organs is classified as a dual gland (both exocrine and endocrine)?
Question 35
Question
Which of the following is not a digestive enzyme for lipids?
Question 36
Question
This monosaccharide is found in all three of the most common disaccharides.
Answer
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Fructose
-
Glucose
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Galactose
-
Levulose
Question 37
Question
Polysaccharides are hydrolyzed by enzymes known as:
Answer
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lipase
-
proteases
-
maltase
-
amylase
Question 38
Question
Digestion of protein begins in the
Answer
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mouth
-
esophagus
-
stomach
-
duodenum
-
jejunum
Question 39
Question
The largest gland in the body?
Answer
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pituitary
-
thyroid
-
thymus
-
liver
Question 40
Question
Which of the following is not a function of the stomach?
Answer
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It. serves as a reservoir for storage of food
-
It destroys pathogenic bacteria
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It begins the absorption of proteins
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All of the above are functions of the stomach.
Question 41
Question
A permanent set of teeth normally consists of [blank_start]32[blank_end] teeth.
Question 42
Question
Which of the following is not a division of the stomach?
Answer
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Rugae
-
Body
-
Pylorus
-
Fundus
Question 43
Question
Beginning with the largest structure which of the following is a correct description of the small intestine's adaptation for absorption?
Answer
-
villi, microvilli, plicae
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plicae, villi, microvilli
-
microvilli,villi, plicae
-
microvilli, plicae, villi
Question 44
Question
A blockage of the ducts from the parotid glands would result in:
Answer
-
increased secretion of saliva
-
interference in carbohydrate digestion in mouth
-
elimination of sense of taste
-
elimination of sense of smell
Question 45
Question
The disaccharide lactose is made up of which two monosaccharides?
Answer
-
Glucose and glucose
-
Glucose and fructose
-
Glucose and galactose
-
None of the above
Question 46
Question
Chemical digestion:
Answer
-
peristalsis
-
segmentation
-
chewing
-
enzymatic hydrolysis
Question 47
Question
An enzyme that will digest proteins into peptides:
Answer
-
lipase
-
amylase
-
nuclease
-
trypsin
-
maltase
Question 48
Question
The disaccharide sucrose is made up of which two monosaccharides?
Answer
-
Glucose and glucose
-
Glucose and fructose
-
Glucose and galactose
-
None of the above
Question 49
Question
Which phase(s) of gastric secretion is/are stimulated by the sight, taste, and smell of food?
Answer
-
Intestinal phase
-
Cephalic phase
-
Gastric phase
-
All of the above
Question 50
Question
Which of the following structures is anatomically the longest?
Answer
-
Esophagus
-
Duodenum
-
Jejunum
-
Ileum
Question 51
Question
Which of the following is not associated with the large intestine?
Answer
-
Pyloric sphincter
-
Cecum
-
Appendix
-
Transverse colon
Question 52
Question
Which of the following statements is true?
Answer
-
The cystic duct and the pancreatic duct join to form the common bile duct.
-
The common bile duct is formed by the joining of the cystic duct from the liver and the hepatic duct from the gallbladder.
-
The pancreatic duct and the hepatic duct join to form the common bile duct.
-
None of the above is true.
Question 53
Question
In the stomach, hydrochloric acid is secreted by the:
Answer
-
a. chief cells
-
b. parietal cells
-
c. lymph nodules
-
d. Both A and B
Question 54
Question
As the food in the stomach is repeatedly squeezed and mixed with gastric juices, it is converted into a semifluid material called:
Question 55
Question
The brush border of the intestinal mucosa consists of:
Answer
-
hair cells
-
villi
-
cilia
-
microvilli
Question 56
Question
Segmentation is different from peristalsis because:
Answer
-
segmentation only occurs in the stomach
-
it is a type of mechanical digestion
-
it does not move food through the digestive tract
-
There is no difference between segmentation and peristalsis
Question 57
Question
Which of the following is not digested prior to absorption
Answer
-
water
-
mineral
-
glucose
-
fatty acid
-
all of the above
Question 58
Question
An end-product of fat digestion is:
Answer
-
glycerol
-
glucose
-
glycogen
-
galactose
Question 59
Question
The numerous small elevations on the surface of the tongue that support taste buds are called:
Answer
-
cilia
-
rugae
-
villi
-
papillae
Question 60
Question
Which of the following is not a function of the liver?
Question 61
Question
Which one of the following is a function of the digestive system:
Question 62
Question
Proteins are broken down into peptides by enzymes in:
Answer
-
a. gastric juices
-
b. pancreatic juices
-
c. intestinal secretions
-
d. both A and B
Question 63
Question
Carbohydrate digestion begins in the:
Answer
-
mouth
-
esophagus
-
stomach
-
duodenum
-
ileum
Question 64
Question
A major final product of carbohydrate digestion:
Answer
-
glucose
-
sucrose
-
lactose
-
maltose
Question 65
Question
Which of these is not an example of mechanical digestion?
Answer
-
Moistening the food
-
Changing food from large to small particles
-
Propelling food through the digestive tract
-
All of the above are examples of mechanical digestion.
Question 66
Question
Which of the following is Not an accessory organ of the digestive system?
Answer
-
salivary gland
-
esophagus
-
pancreas
-
gall bladder
-
liver
Question 67
Question
The enzyme pepsin begins the digestion of:
Answer
-
carbohydrates
-
protein
-
fat
-
all of the above
Question 68
Question
The oral fissure divides the:
Answer
-
upper lip from the lower lip
-
cheek muscle from the teeth
-
right and left sides of the palate
-
right side of the tongue from the left side of the tongue