WorksheetsA&P17 Digestive System
Total questions: 84
Worksheet time: 42mins
Name
Class
Date
1.
The alimentary canal extends, in its entirety, from
a)
the mouth to the large intestine
b)
the stomach to the small intestine
c)
the liver to the gallbladder
d)
the mouth to the anus
2.
The digestive system
a)
ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder.
b)
ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder.
c)
sends cellular debris to lysosomes.
d)
absorbs nutrients in the mouth, pharynx, esophagus and stomach, and releases nutrients in the intestines
3.
The correct sequence for the layers in the walls of the alimentary canal from innermost to outermost is the
a)
mucosa, muscular layer, serosa, submucosa.
b)
mucosa, submucosa, muscular layer, serosa
c)
serosa, muscular layer, mucosa, submucosa.
d)
submucosa, mucosa, serosa, muscular layer.
4.
The _______ is the layer of the alimentary canal that absorbs nutrients.
a)
mucosa
b)
submucosa
c)
muscular layer
d)
serosa
5.
Peristalsis occurs in the digestive tract
a)
from the pharynx to the anus.
b)
in the stomach and small intestine only
c)
in the small and large intestines only.
d)
in the stomach, small intestine, and large intestine.
6.
Activities of the digestive system generally increase when it is stimulated by
a)
sympathetic impulses
b)
parasympathetic impulses
c)
sensory impulses
d)
somatic impulses
7.
The teeth that are best adapted for biting off hunks of food are the
a)
incisors
b)
canines
c)
bicuspids
d)
molars
8.
The root canal of a tooth contains
a)
dentim
b)
cementum
c)
gingiva
d)
blood vessels and nerves
9.
The mechanical breakup of food particles in the mouth is called
a)
mastication
b)
salivation
c)
peristalsis
d)
absorption
10.
The uvula is
a)
a type of tooth
b)
a projection from the soft palate
c)
a flap of tissue that keeps food from entering the trachea
d)
part of the tongue
11.
Because of their location, swollen palatine tonsils may interfere with
a)
breathing
b)
swallowing
c)
both swallowing and breathing
d)
neither swallowing and breathing
12.
Salivary amylase digests
a)
carbohydrates
b)
proteins
c)
fats
d)
vitamins
13.
The functions of a saliva include
a)
moistening, binding and building up food particles; beginning chemical digestion of carbohydrates; and
b)
moistening, binding and dissolving food particles; beginning chemical digestion of proteins; and cleansing the esophagus.
c)
moistening, binding and building up food particles; beginning mechanical digestion of fats; and cleansing the teeth and mouth.
d)
moistening, binding, and dissolving food particles; beginning chemical digestion of carbohydrates; and cleaning the teeth and mouth.
14.
The parotid glands are
a)
cleansing the esophagus
b)
the smallest salivary glands
c)
under the tongue
d)
in the lower jaw
15.
In the swallowing reflex,
a)
muscles pull the pharynx upward toward the food.
b)
the epiglottis closes off the top of the trachea.
c)
the tongue presses against the uvula and soft palate.
d)
all of the above
16.
The epiglottis is attached to the
a)
esophagus
b)
trachea
c)
pharynx
d)
larynx
17.
Edith suffers from severe heartburn. She goes to her physician and is diagnosed with a hiatal hernia. This condition affects her
a)
abdominal wall
b)
small intestine
c)
diaphragm
d)
stomach wall
18.
Heartburn is usually caused by the effects of gastric juice on the
a)
heart
b)
esophagus
c)
stomach
d)
small intestine
19.
Elliot thought that his peptic ulcers were caused by his nagging parents, and was surprised when the doctor handed him a prescription for medication to treat
a)
a bacterial infection
b)
a viral infection
c)
a too high pH
d)
excess bile
20.
The main part of the stomach is called the
a)
fundus
b)
pylorus
c)
cardia
d)
body
21.
It is good that Emily does not remember being a newborn, because she was miserable vomiting frequently. An x-ray revealed hypertrophic pyloric stenosis. The problem in Emily's digestive system, before surgery helped her, was
a)
an extra stomach
b)
overgrowth of muscle that blocked the passageway from the stomach to the small intestine.
c)
absence of the pyloris
d)
a peptic ulcer
22.
Matthew takes a drug that inhibits the production of HCl in the stomach to ease the symptoms of gastric ulcer. If he takes it for a long time, digestion of which nutrient would be affected the most?
a)
carbohydrates
b)
lipids
c)
proteins
d)
minerals
23.
The parietal cells of gastric glands secrete
a)
mucus
b)
pepsinogen
c)
hydrochloric acid
d)
pepsin
24.
All of the enzymes that digest protein are
a)
secreted by the pancreas
b)
activated by HCl
c)
secreted in an inactive form
d)
stimulated by enterokinase
25.
Gastrin, which stomach cells secrete,
a)
inhibits production of hydrochloric acid
b)
increases secretion by the gastric glands
c)
changes pepsin into pepsinogen
d)
contracts the stomach
26.
Secretion of cholecystokinin from the intestinal wall is stimulated by
a)
protein in the stomach
b)
protein in the small intestine
c)
fat in the stomach
d)
protein and fat in the small intestine
27.
The hormone secretin
a)
converts trypsinogen to trypsin
b)
activates chymotrypsin
c)
stimulates release of pancreatic juice
d)
inhibits the action of pancreatic lipase
28.
___________ is a protein-digesting enzyme in pancreatic juice.
a)
Trypsin
b)
Pancrease
c)
Amylase
d)
Nuclease
29.
Acute pancreatitis is often caused by the conversation of
a)
trypsin to trypsinogen
b)
trypsinogen to trypsin
c)
pepsin to pepsinogen
d)
pepsinogen to pepsin
30.
Pancreatic digestive secretions are regulated by
a)
bile salts
b)
cholesterol
c)
cholecystokinin
d)
the amount of food eaten
31.
Functions of the liver include
a)
maintaining blood glucose concentration
b)
formation of urea
c)
secretion of bile
d)
all of the above
32.
Which of the following is true about bile?
a)
Cholecystokinin stimulates its production
b)
Secretin stimulates release of bile into the duodenum
c)
It contains concentrated enzymes that digest carbohydrates
d)
Bile is produced by the liver
33.
Which constituent of bile has a digestive function?
a)
bile salts
b)
bile pigments
c)
cholesterol
d)
electrolytes
34.
The liver
a)
forms glucose from noncarbohydrates
b)
stores Vitamin C
c)
produces red blood cells
d)
secretes chymotrypsin
35.
David has sustained severe damage to his liver in a car accident. Digestion of which nutrient will be most affected?
a)
carbohydrates
b)
lipids
c)
proteins
d)
vitamins
36.
The common hepatic duct and the cystic duct unite to form the
a)
common bile duct
b)
hepatic duct
c)
hepatopancreatic duct
d)
pancreatic duct
37.
Gallstones may form if
a)
bile is too concentrated
b)
hepatic cells secrete too much HCl
c)
the pH of the gallbladder becomes too alkaline
d)
the liver is lacerated
38.
Gallstones are usually composed of
a)
calcium salts
b)
uric acid
c)
cholestrol
d)
bile pigments
39.
Bile sats function like detergents in that they ________ fat globules.
a)
emulsify
b)
coagulate
c)
digest
d)
liquefy
40.
The _______ is part of the digestive tract that has the most lymph nodules and bacteria.
a)
duodenum
b)
jejunum
c)
ileum
d)
colon
41.
The greater omentum is composed of
a)
the peritoneal membrane
b)
the pericardial membrane
c)
the pleural membrane
d)
the hiatal membrane
42.
The epithelial cells that form the inner lining of the small intestine
a)
are replaced every few days
b)
are not able to reproduce
c)
are cube-shaped
d)
remain where they are first formed
43.
Tanisha has abdominal pains. Medical tests reveal that she can digest nutrients, but the nutrients are not taken in by the intestinal blood supply. She likely has
a)
malnutrition
b)
malabsorption
c)
constipation
d)
food allergy
44.
Which of the following is the correct sequence for the digestion and absorption of lipids?
a)
4, 3, 2, 1, 5
b)
2, 4, 3, 1,5
c)
2, 1, 4, 3, 5
d)
3, 2, 4, 5, 1
45.
The major mixing movement in the small intestine is accomplished by
a)
peristalsis
b)
churning
c)
segmentation
d)
ring contractions
46.
Chylomicrons transport dietary fats to ________ through the blood.
a)
bones and cartilage
b)
neurons and neuroglia
c)
the liver and gallbladder
d)
muscle and adipose cells
47.
VLDL molecules are produced in which organ?
a)
pancreas
b)
liver
c)
kidneys
d)
stomach
48.
Receptor-medicated endocytosis removes _______ molecules from plasma, cholesterol to the tissues
a)
VLDL
b)
LDL
c)
HDL
d)
triglycerides
49.
________ pick up cholesterol from the peripheral tissues and return it to the liver
a)
VLDL's
b)
LDLs
c)
LDLs
d)
triglycerides
50.
One of the functions of the large intestine is to
a)
secrete digestive enzymes
b)
absorb ingested water
c)
regulate the release of bile
d)
break down hemoglobin
51.
During the defecation reflex, the
a)
diaphragm is lowered
b)
glottis is opened
c)
abdominal wall muscles relax
d)
internal abdominal pressure is decreased
52.
Enlarged blood vessels of the anal columns are called
a)
peritonitis
b)
hemorrhoids
c)
diarrhea
d)
flatulence
53.
Feces contain
a)
electrolytes
b)
undigested food
c)
bacteria
d)
all of the above
54.
Feces are about ______ percent water
a)
25
b)
33
c)
50
d)
75
55.
Changes in the mouth associated with aging include
a)
overgrowth of gums
b)
thinning enamel
c)
thinning cementum
d)
shrinking dentum
56.
Lydia is taking an antihistamine for her allergies and develops xerostomia. She has
a)
a peptic ulcer
b)
hair loss
c)
bad breath
d)
dry mouth
57.
Factors that may affect the rate of absorption of certain medications with age include
a)
slowing of the exit of chyme from the stomach
b)
slowing peristalsis
c)
thinning of the stomach lining
d)
all of the above
58.
Bacteria cause dental caries by
a)
infecting the gums
b)
destroying the gums so that the teeth loosen
c)
metabolizing carbohydrates in food, producing acidic by-products that damage the enamel and dentin
d)
secreting acids that dissolve enamel
59.
Over-the-counter antacids usually include
a)
agents that lower the pH in the stomach
b)
sodium, aluminum, calcium, or magnesium
c)
a mixture of digestive juices
d)
anti-inflammatory medicines such as ibuprofen
60.
An extracorporeal liver assist device was surgically implanted into Sam. This device is very similar to
a)
an artificial heart
b)
artificial skin
c)
kidney dialysis
d)
a blood transfusion
61.
Hepatitis B can be transmitted by means of
a)
a sexual activity
b)
hypodermic needles
c)
saliva
d)
all of the above
62.
The tissues turning yellow (jaundice) is due to the accumulation of
a)
cholesterol
b)
bile pigments
c)
carotene
d)
hemoglobin
63.
Hepatitis C is not transmissible
a)
by sharing razors
b)
from mother to baby
c)
from uncooked meats
d)
from a blood transfusion
64.
An X-rays series of the bile ducts is called a
a)
cholangiogram
b)
cholecystogram
c)
cholecystectomy
d)
cholelithiasis
65.
The disorder of the large intestine producing a "cobblestone" effect within the tissues of the colon is
a)
colorectal cancer
b)
hemorrhoids
c)
Crohn's disease
d)
ulcerative colitis
66.
The organs of the alimentary canal are innervated by sympathetic as well as parasympathetic nerve fibers
a)
true
b)
false
67.
Peristalsis mixes food in small segments of the alimentary canal with digestive enzymes.
a)
true
b)
false
68.
The chamber of the mouth between the tongue and the palate is the vestibule.
a)
true
b)
false
69.
A set of primary teeth consists of 20 teeth, whereas a set of secondary teeth consists of 32 teeth.
a)
true
b)
false
70.
The parotid gland differs from the submandibular and sublingual glands in that it secretes a clear fluid that is rich in amylase.
a)
true
b)
false
71.
The esophagus provides a passageway for substances from the larynx to the bronchi.
a)
true
b)
false
72.
The stomach is C-shaped and extends from the duodenum to the spleen.
a)
true
b)
false
73.
The pyloric sphincter serves as a valve that controls the movement of food between the esophagus and stomach.
a)
true
b)
false
74.
Fatty foods stay in the stomach longer than protein or carbohydrate foods.
a)
true
b)
false
75.
The enterogastric reflex begins in the stomach and ends in the small intestine.
a)
true
b)
false
76.
Pancreatic acinar cells secrete pancreatic juice.
a)
true
b)
false
77.
The hepatic duct connects the gallbladder to the bile duct.
a)
true
b)
false
78.
Bile is composed of HCl, pepsin, mucus, and intrinsic factor.
a)
true
b)
false
79.
Cholecystokinin, a hormone released from intestinal mucosa as a result of stimulation by the presence of fats in the small intestine, stimulates the gallbladder to contract and release bile into the duodenum.
a)
true
b)
false
80.
Bile salts function as digestive enzymes to break down fatty acids.
a)
true
b)
false
81.
Lymph transports fat molecules with longer chains of carbon atoms away from the intestine.
a)
true
b)
false
82.
From the stomach, food passes into the duodenum, then the jejunum, and then the ileum.
a)
true
b)
false
83.
The movement of chyme through the small intestine is increased by parasympathetic impulses and is inhibited by sympathetic impulses.
a)
true
b)
false
84.
The cecum is located at the inferior end of the descending colon.
a)
true
b)
false
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