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Multiple Choice Quiz
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1
Which gastrointestinal layer is characterized by having tough, fibrous connective tissue?
A)mucosa
B)submucosa
C)muscle
D)serosa
2
Which intestinal layer accounts for the action of the peristaltic waves?
A)serosa
B)muscularis
C)submucosa
D)mucous
3
The alimentary tube is around _____ meters long.
A)2
B)4
C)6
D)9
4
The _____ nervous system division usually stimulates and promotes digestion.
A)somatic
B)sympathetic
C)central
D)parasympathetic
5
The processes of chewing are referred to as _____.
A)churning
B)mastication
C)peristalsis
D)deglutition
6
The frenulum is the membrane attached to the inferior surface of the _____.
A)tongue
B)stomach
C)lips
D)liver
7
The following are true of the tongue except which one?
A)contains skeletal muscle
B)attaches to hyoid bone
C)attaches to temporal bone
D)contains papillae
8
The following areas contain tonsils except which one?
A)around the frenulum
B)oropharynx
C)nasopharynx
D)root of tongue
9
Which lymphatic areas are most commonly the site of inflammation?
A)Peyer's patches
B)palatine tonsils
C)lingual tonsils
D)adenoids
10
How many teeth will be produced in an average lifetime?
A)20
B)32
C)30
D)52
11
The term wisdom tooth refers to the _____ tooth.
A)incisor
B)third molar
C)second bicuspid
D)first cuspid
12
The portion of a tooth which lies within the mandible socket is called the _____.
A)dentin
B)crown
C)root
D)cementum
13
Which part of a tooth most closely resembles bone tissue?
A)enamel
B)cementum
C)dentin
D)gingiva
14
Which muscles constrict to prevent air from entering the esophagus during breathing?
A)superior constrictor
B)middle constrictor
C)inferior constrictor
D)esophageal
15
A hiatal hernia is a weakness in the _____ muscle, which allows a portion of the digestive tract to enter the thoracic cavity.
A)diaphragm
B)stomach
C)intestinal
D)thoracic wall
16
The _____ part of the stomach is the area that is connected to the esophagus.
A)cardiac
B)pyloric
C)fundus
D)body
17
The _____ prevents food from entering the small intestine.
A)cardiac sphincter
B)pyloric valve
C)ileo-colic valve
D)sphincter of Oddi
18
Gastric enzymes are secreted by the _____ cells.
A)chief
B)goblet
C)parietal
D)oxyntic
19
Proteins are digested or broken down by the _____ in the stomach.
A)pepsinogen
B)pepsin
C)hydrochloric acid
D)lipase
20
Parasympathetic stomach impulses cause all of the following except which one?
A)secretion of somatostatin
B)inhibition of somatostatin
C)secretion of gastrin
D)promotes histamine
21
Gastrin secretion will stop when the stomach pH reaches _____.
A)7.0
B)4.5
C)1.5
D)3.0
22
The alkaline tide occurs when _____ is/are secreted into the blood.
A)HCl
B)H+
C)bicarbonate ions
D)phosphate ions
23
What is the stimulus for cholecystokinin release?
A)chyme
B)lipids
C)protein
D)gastrin
24
What blocks pancreatic secretions from entering the duodenum?
A)pyloric valve
B)sphincter of Oddi
C)the common bile duct
D)cholecystokinin secretion
25
Which of the following triggers the formation of the others?
A)trypsin
B)enterokinase
C)carboxypeptidase
D)chymotrypsin
26
Proteins are split by all of the following pancreatic factors except which one?
A)zymogen
B)chymotrypsin
C)trypsin
D)carboxypeptidase
27
Pancreatitis is mainly the result of _____ activity.
A)bile
B)bacterial
C)carboxypeptidase
D)trypsin
28
Which of the following are not active in the duodenum?
A)nuclease
B)enterokinase
C)pepsin
D)amylase
29
Secretin from the duodenum causes the pancreas to produce secretions rich in _____.
A)proteolytic enzymes
B)amylase
C)lipase
D)bicarbonate
30
Which of these is a hormone name?
A)trypsin
B)ribonuclease
C)cholecystokinin
D)chymotrypsinogen
31
The hormone that causes the pancreas to secrete an enzyme rich fluid is _____.
A)cholecystokinin
B)secretin
C)enterogastrone
D)enterocrinin
32
Which organ has the most metabolically active cells?
A)pancreas
B)liver
C)stomach
D)small intestine
33
Urea is synthesized by the liver following _____ metabolism.
A)carbohydrate
B)protein
C)lipid
D)nucleic acid
34
Ferritin is a globular protein that transports and stores ______ in the liver and blood.
A)glycogen
B)lipids
C)vitamin B12
D)iron
35
Which of the following vitamins is not stored in the liver?
A)C
B)D
C)B12
D)A
36
The liver stores ______ for energy.
A)nucleic acids
B)glycogen
C)glucose
D)vitamins
37
Which of the following is not a function of the adult liver?
A)glycogen storage
B)detoxification
C)synthesis of clotting proteins
D)erythropoiesis
38
The liver contains special blood channels termed _____.
A)sinusoids
B)central vein
C)hepatic cells
D)portal veins
39
The falciform ligament separates the right from _____ lobe.
A)quadrate
B)left
C)caudate
D)pancreatic
40
Which organ produces and secretes bile?
A)liver
B)gallbladder
C)pancreas
D)duodenum
41
The Kupffer cells are phagocytic cells found in the _____.
A)gallbladder
B)pancreas
C)intestine
D)liver
42
The buildup of bile pigment in tissues that can be caused by gallstones is _____.
A)hyperbilirubinemia
B)obstructive jaundice
C)hepatitis
D)hepatocellular jaundice
43
Which of the following are liver waste products?
A)bilirubin
B)bile salts
C)cholesterol
D)electrolytes
44
The _____ duct directly receives the fluids from the gallbladder.
A)cystic
B)common bile
C)hepatic
D)common hepatic
45
The common bile duct is formed by the merger of the hepatic and _____ ducts.
A)common hepatic
B)cystic
C)pancreatic
D)Santorini
46
The ampulla of Vater is the area that joins the common bile duct to the _____ duct.
A)hepatic
B)pancreatic
C)cystic
D)common hepatic
47
Gallbladder stones are medically referred to as a _____ condition.
A)cholecystitis
B)cholecystectomy
C)cholelithiasis
D)cholesterol calculi
48
Bile facilitates digestion by causing the _____ of fats.
A)hydrolysis
B)digestion
C)catalysis
D)emulsification
49
Bile salts combine with fatty acids to form complexes called _____ that facilitate absorption.
A)chylomicrons
B)micelles
C)globules
D)lipoproteins
50
Which of these is a water soluble vitamin?
A)D
B)C
C)E
D)K
51
Which of the following acts to inhibit acid production?
A)secretin
B)somatostatin
C)cholecystokinin
D)gastrin
52
Which area has the greatest amount of enzyme activity?
A)duodenum
B)colon
C)jejunum
D)ileum
53
The shortest section of the intestines is the _____.
A)colon
B)duodenum
C)ileum
D)jejunum
54
The membrane that hangs like an apron over the intestines is the _____.
A)mesentery
B)visceral peritoneum
C)parietal peritoneum
D)greater omentum
55
The finger-like extensions inside the small intestine are called _____ and increase the surface area.
A)microvilli
B)villi
C)lacteals
D)lumens
56
The _____ are vessels that project into the villi and absorb fatty substances.
A)lacteals
B)lymphatics
C)veins
D)arteries
57
The following belong together except which one?
A)small intestine
B)large intestine
C)plicae circulares
D)crypts of Lieberkuhn
58
Which of these does not belong with the others?
A)lipase
B)sucrase
C)maltase
D)lactase
59
Which is the only area that can digest a double sugar?
A)jejunum
B)stomach
C)duodenum
D)pancreas
60
Amylase could be found in all of these areas except which one?
A)mouth
B)stomach
C)duodenum
D)pancreas
61
Most of the absorption of nutrients occurs in the _____.
A)colon
B)duodenum
C)jejunum
D)ileum
62
Fatty acids and glycerol are released when _____ are broken down by liver or muscle cells.
A)micelles
B)chylomicrons
C)lacteals
D)lipoproteins
63
Which of the following is not readily absorbed in the small intestine?
A)Na+
B)Cl-
C)K+
D)Mg2+
64
The ileocecal valve prevents chyme from entering the _____.
A)large intestine
B)small intestine
C)stomach
D)duodenum
65
A peristaltic rush which results in a failure to absorb enough colon water results in _____.
A)constipation
B)diarrhea
C)cramps
D)flatus







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