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WorksheetsDigestive System
Total questions: 143
Worksheet time: 2hrs 36mins
What is digestion?
the process of breaking down food into small fragments
mastication of food into smaller fragments
absorption of water and food
absorption of nutrients into the blood
the tube that extends from the mouth to the anus
small intestine
auditory canal
gastrointestinal tract
esophagus
wave like muscle contractions that pushes food through the intestine
absorption
digestion
ingestion
peristalsis
(a) digestion physically breaks down ingested materials into smaller pieces
(a) digestion secretes enzymes such as saliva to break food down into smaller pieces
What is the organs that are included in the gastrointestinal tract?
mouth, tongue, pharynx, esophagus, stomach, pancreas, small intestine, large intestine, and anus
tongue, teeth, salivary glands, liver, gallbladder, and pancreas
mouth, pharynx, esophagus, stomach, small intestine, liver, and anus
mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus
What are the functions of the digestive system?
digestion
absorption
elimination of wastes
churning of the stomach
What are the accessory digestive organs?
mouth, tongue, liver, pancreas, gallbladder, salivary glands
mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus
tongue, teeth, salivary glands, liver, gallbladder, and pancreas
tongue, teeth, salivary glands, liver, pancreas, stomach
GI lymphatics absorb
fat and lipid molecules
fat and vitamins
nutrients
fats
tongue, teeth, salivary glands, liver, gallbladder, and pancreas
Accessory digestive organs
GI tract organs
mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus
Accessory digestive organs
GI Tract organs
Abdominopelvic cavity is line by (a)
The peritoneum that lines the abdominal wall
parietal peritoneum
visceral peritoneum
peritoneum cavity
The peritoneum that COVERS the abdominal organs
peritoneum cavity
parietal peritoneum
visceral peritoneum
What is the peritoneum cavity?
(a)
What is the first step in the process of digesting and absorbing materials?
mechanical digestion
ingestion
absorption
chemical digestion
The process of turning waste into feces and fecal material
secretion
defecation
absorption
elimination
Producing and releasing mucin or fluids such as acid, bile and digestive enzymes
chemical digestion
secretion
ingestion
elimination
mastication (chewing)
digestion
chemical digestion
mechanical digestion
ingestion
mucin mixing with water to form mucus and coats GI wall to lubricate it against acidic secretions
mechanical digestion
digestion
chemical digestion
ingestion
Passive or active transport of electrolytes, digestion products, vitamins and water across the GI tract epithelium and into GI blood and lymph vessels
absorption
digestion
chemical digestion
secretion
What is defecation?
materials moving through the large intestine
the process of turning waste into feces
removing and excreting feces from the body
breaking down large food items into smaller structures
What is process of digestion from start to end?
chemical digestion, mechanical digestion, absorption, elimination and defecation
ingestion, mechanical digestion, chemical digestion, absorption, elimination and defecation
mechanical digestion, chemical digestion, absorption and elimination
ingestion, digestion, absorption, defecation
The digestive system is controlled by _________ nervous system
autonomic
sympathetic
Parasympathetic _____________ the activity of the GI tract
decreases
increases
Sympathetic _____________ the activity of the GI tract
increases
decreases
What type of epithelium does the oral cavity have?
simple squamous epithelium
pseudostratified cuboidal columnar epithelium
nonkeratinized stratified squamous epithelium
mucosa
What is the role of nonkeratinized stratified squamous epithelium in the oral cavity
(a)
When chewed, food is mixed with saliva and converted into a ball of food called _______.
feces
chyme
a bolus
bile
Undigested materials are expelled from the body via a process called ______.
absorption
regulation
defecation
secretion
Which of the following is NOT a function of the tongue?
gustation
olfaction
sound production
swallowing
The salivary glands collectively produce and secrete saliva, a fluid that assists in the initial activities of ______.
absorption
digestion
excretion
Teeth are responsible for ______, the first part of the ______ digestion process.
dentition, chemical
mastication, mechanical
mastication, chemical
The oropharynx and the laryngopharynx are lined with ______ epithelium.
nonkeratinized stratified squamous
pseudostratified ciliated
simple columnar
keratinized stratified squamous
Not everything we eat can be used by the body. Two examples include ______ and ______.
protein, fat
cellulose, fiber
carbohydrates, protein
vitamins and fates
The portion of the serous membrane that directly contacts the surface of some abdominal organs is called the ______ peritoneum.
visceral
parietal
The tongue is an accessory digestive organ that is formed primarily from ______ muscle and covered with stratified ______ epithelium.
skeletal, squamous
smooth, squamous
smooth, columnar
skeletal, columnar
The ______ cavity is a potential space where the parietal and visceral layers that face each other secrete a lubricating ______ fluid.
abdominal, muscous
abdominal, serous
peritoneal, serous
peritoneal, mucous
Most saliva is produced during ______, but smaller amounts are produced continuously to ensure that the oral cavity mucous membrane remains moist.
mealtime
nighttime
the morning
In a tooth, ______ pass through the apical foramen and are housed in the pulp.
lymphatic vessels and enamel
dentin and enamel
blood vessels and nerves
collagen and elastin fibers
The nerve fibers that control the contractions of the circular and longitudinal layers of the muscularis are called the (a) nerve plexus.
The abdominopelvic cavity is lined with moist ______ membranes.
serous
adventitia
mucous
In the submucosa, ______-secreting glands project ducts across the mucosa and open into the lumen of the tract in the esophagus and duodenum.
mucin
water
acid
serous
he wall of the GI tract, from the esophagus through the ______, contains ______ concentric layers called tunics.
rectum, five
stomach, three
large intestine, four
small intestine, three
For most of the abdominal GI tract organs, the lining epithelium is a ______ epithelium.
tranitional
stratified columnar
simple columnar
pseudostratified
The muscularis usually contains two layers of ______ muscle.
smooth
striated
skeletal
In the GI tract, branches of the arteries travel within the tunics, and the mucosa contains capillaries that have ______ endothelial cells to promote absorption.
sinusoidal
fenestrated
continuous
Exceptions to the typical pattern of smooth muscle fiber orientation include the ______ (which contains a mixture of skeletal and smooth muscle) and the ______ (which contains three layers of smooth muscle).
esophagus/stomach
ilieum, jejunum
duodenum
The parasympathetic changes in activity induce ______ and an increase in GI ______ flow.
vasodilation, blood
vasoconstriction, lymph
vasoconstriction, blood
The blood vessels, lymphatic structures, and nerves enter the GI tract from either the surrounding structures or via the supporting ______.
lamina propria
submuosa
mesentery
The submucosa is composed of either ______ or dense irregular connective tissue and has far ______ cells than the lamina propria.
adipose, fewer
adipose, more
areolar, fewer
dense regular, more
The veins of the GI tract merge to form the ______ system of veins.
phrenic
hepatic portal
hepatic vein
splenic
In general, ______ innervation promotes digestive system activity by stimulating GI gland secretions and peristalsis, and by relaxing GI sphincters.
somatic
sympathetic
parasympathetic
The inferior part of the esophagus connects to the stomach by passing through an opening in the diaphragm called the esophageal
(a)
Swallowing, also called (a) , is the process of moving ingested material from the oral cavity to the stomach
After the bolus has been completely processed in the stomach, the product is called ______.
slime
chylomicron
chyme
prime
The (a) is a tubular passageway for swallowed materials being conducted from the pharynx to the stomach.
The empty esophagus is ______.
distended
continuously open
flattened
partially open
Select three phases of swallowing
esophageal
laryngeal
tracheal
pharyngeal
voluntary
The oblique layer is best-developed at the ______ and the ______ of the stomach.
fundus/pylorus
cardia/body
body/pylorus
At the base of each pit are the openings of several branched tubular glands, called ______, which extend through the length of the mucosa to its base.
rugae
villi
cilia
gastric glands
The stomach is intraperitoneal, so its outermost tunic is a(n) ______.
submucosa
serosa
mucosa
adventitia
The gastric glands in the cardia and pylorus produce mainly protective and ______, mucin.
alkaline
acidic
neutral
The small intestine receives its blood supply primarily from branches of the ______ mesenteric artery, and it is innervated by the superior mesenteric ______.
medial, plexus
lateral, artery
inferior, artery
superior, plexus
Ingested nutrients spend at least ______ hours in the small intestine as chemical digestion and absorption are completed.
24
2
4
12
Circular folds act to ______ the movement of chyme and ensure that it remains within the small intestine for maximal nutrient absorption.
slow down
speed up
The large intestine originates at the (a) junction and terminates at the anus.
Circular (a) in the small intestine help increase the surface area through which nutrients can be absorbed.
By absorbing most of the remaining water, the watery material that first enters the large intestine soon solidifies and becomes ______.
feces
bile
chyme
bolus
The small intestine extends from the ______ of the stomach to the ______ of the large intestine, and thus occupies a significant portion of the abdominal cavity.
pylorus, ileum
pylorus, cecum
fundus, cecum
body, ileum
The villi ______ the small intestine surface area for absorption and secretion.
increase
decrease
The large intestine absorbs most of the ______ and ions from the remaining digested material.
nutrients
fiber
cellulose
water
Both the cecum and the vermiform appendix are ______ organs.
intraperitoneal
mucosal
retroperitoneal
The ascending colon is ______ since its posterior wall directly adheres to the posterior abdominal wall, and only its anterior surface is covered with peritoneum.
retroperitoneal
omental
intraperitoneal
A type of mesentery called the transverse (a) connects the transverse portion of the large intestine to the posterior abdominal wall.
Three thick, transverse folds of the rectum, called (a) valves, ensure that fecal material is retained during the passing of gas.
The mucosa of the large intestine is lined with simple ______ epithelium and goblet cells.
cuboidal
columnar
squamous
The descending colon is ______ and found along the ______ side of the abdominal cavity.
retroperitoneal
left
right
intraperitoneal
The rectum is a ______ structure that connects to the ______ colon.
intraperitoneal, descending
retroperitoneal, descending
intraperitoneal, sigmoid
retroperitoneal, sigmoid
The large intestine mucosa lacks ______.
basal lamina
intestinal villi
epithelium
Hepatocytes produce bile, detoxify drugs, metabolites, and poisons.
True
False
The accessory digestive organs produce ______ that facilitate the chemical digestive activities of GI tract organs.
secretions
hormones
sebum
The (a) duct connects the gallbladder to the common bile duct
Hepatocytes synthesize blood plasma proteins such as albumins, ______, and proteins required for blood clotting.
globulins
secretin
trypsin
somatostatin
The __________ concentrates bile produced by the _______ and stores this concentrate until it is needed for digestion.
(a)
The biliary apparatus is a network of thin ducts that carry bile from the liver and gallbladder to the ______.
jejunum
ileum
duodenum
stomach
The exocrine activity of the pancreas results in the secretion of digestive _______ and bicarbonate, collectively called __________ juice, into the duodenum
(a)
The oral cavity is continuous posteriorly with the
(a)
Tongue motor innervation
CN XII Hypoglossal
CN V Trigeminal
CN IX Glossopharyngeal
CN X Vagus
Tongue sensory (texture) innervation
CN V Trigeminal
CN IX Glossopharyngeal
CN XII Hypoglossal
CN VII Facial
Tongue Taste innervation
CN VII Facial
anterior 2/3
posterior 1/3
CN IX Glossopharyngeal
What is the function of the soft palate and uvula?
speech production
turn food into a bolus
rises to close off nasopharynx when swallowing
Function of saliva
dissolve food molecules
moistens food and helps turn it into a bolus
cleanses mouth
chemical digestion of carbohydrates
inhibit bacterial growth
Function of the pharynx
voluntarily propel food from the mouth into the esophagus
involuntarily propel food from the mouth into the esophagus
Which structure conducts both food and air?
oropharynx
trachea
laryngopharynx
esophagus
What epithelium lines the nasopharynx?
pseudostratified cuboidal columnar
simple squamous
keratinized stratified squamous
nonkeratinized stratified squamous
What epithelium lines the oropharynx and laryngopharynx?
keratinized stratified squamous
nonkeratinized stratified squamous
PCCE
simple squamous
What organ has nonkeratinized stratified squamous mucosa?
esophagus
stomach
small intestine
large intestine
Which organ(s) have simple columnar epithelium mucosa?
esophagus
stomach
small intestine
large intestine
Which organ has 2 layers of muscle?
1/3 skeletal muscle
1/3 smooth and skeletal muscle
1/3 smooth muscle
large intestine
small intestine
esophagus
stomach
Which organ has 3 layers of smooth muscle?
small intestine
stomach
large intestine
esophagus
Which organ has a inner circular layer and an outer longitudinal layer
small intestine
stomach
large intestine
esophagus
Which organ has 2 layers of smooth muscle?
outer longitudinal layer (teniae coli)
small intestine
large intestine
stomach
esophagus
The tunics comprising the GI tract wall include
mucosa
submucosa
muscularis
serosa or adventitia
Function of the stomach
churn food and mixes it with gastric juice to break it down into chyme
chemical digestion
absorb nutrients
food leaves the stomach as (a)
The mucosa of the stomach contains (a)
Why does the muscularis of the stomach have 3 layers of smooth muscle and not two?
helps to churn the food into smaller pieces
the stomach is able to absorb more food and nutrients
Functions of the small intestine
finishes the chemical digestion process
churn food into smaller pieces
absorbs the rest of the water in the intestine
absorbs most of all the nutrients
The duodenum receives chyme from the (a)
How does the duodenum receive bile and pancreatic enzymes?
pancreas
duodenum papilla
common bile duct
gallbladder
Which of the following is the correct order of small intestine regions that food passes as it's being digested?
duodenum-ileum-jejunum
duodenum-jejunum-ileum
jejunum-duodenum-ileum
ileum-jejunum- duodenum
Which cranial nerves innervate the salivary glands?
VI and IX
XI and XII
V and XI
VII and IX
Which is not correct about the esophagus?
it serves as the passageway for a bolus to pass from the pharynx to the stomach
it is located posterior to the trachea
it secretes a variety of enzymes for chemical digestion
it produces movement by peristalsis
Check all that are characteristics of the esophagus
the mucosa is composed of thick, nonkeratinized stratified squamous epithelium
it is composed entirely of smooth muscle
the two layers of muscle in the superior one-third of the muscularis are skeletal
it is located almost entirely in the abdomen
Oral cavity function
secrete saliva and breakdown food
move food from mouth into esophagus
churn food
finish chemical digestion with saliva
Select the functions of the liver
concentrates bile
produce and secretes bile
process the products of digestion
expel bile
_____ ______ vein brings blood into the liver from the small intestine
(a)
The hepatic artery brings in blood________ from the heart/aorta
high in oxygen
low in oxygen
Oxygenated and deoxygenated blood from the branch of the hepatic artery and branch of the hepatic portal vein sends blood to the (a)
Bile flows in the ________ direction from the central vein
opposite
same (as the oxygenated and deoxygenated blood)
Does the gallbladder produce bile?
no
yes
What organ store and concentrate bile
liver
gallbladder
The pancreas has (a) cells
The pancreas secrete (a) juice
What is pancreatic juice function
neutralize gastric juice
breakdown food
a network of tubes that transport bile and pancreatic juice to the duodenum
duodenal papilla
common bile duct
pancreatic duct
biliary apparatus
What is the path of bile through the biliary apparatus starting from the gallbladder to the small intestine?
left and right hepatic ducts, common bile duct, gallbladder, common hepatic duct, hepatopancreatic ampulla, major duodenal papilla
left and right hepatic ducts, common hepatic duct, gallbladder, common bile duct, major duodenal papilla
left and right hepatic ducts, common hepatic duct, gallbladder, common bile duct, hepatopancreatic ampulla, major duodenal papilla
left and right hepatic ducts, common hepatic duct, common bile duct, hepatopancreatic ampulla, gallbladder, major duodenal papilla
Celiac supplies blood to the
stomach
small intestine
liver
spleen
Superior mesenteric artery supplies blood to
almost all of small intestine
all of the large intestine
first part of large intestine
just the small intestine
inferior mesenteric artery supplies blood to
final part of large intestine
all of large intestine
stomach
small intestine
Veins that drain blood from GI tract directly to the liver
hepatic portal system
central vein
hepatic vein
Where does the splenic vein drain blood from?
spleen
liver
pancreas
gallbladder
What are the cells that process blood from the hepatic portal vein?
(a)
When the blood from the hepatic portal vein is processed and leaves the liver, where does it go?
(a)
Salivary glands are increased by
parasympathetic
sympathetic
Sphincter relaxes (vasodilation)
parasympathetic
sympathetic
Sphincter closes (vasoconstriction)
parasympathetic
sympathetic
Increased peristalsis
parasympathetic
sympathetic
Decreased peristalsis
sympathetic
parasympathetic
decreased bile production
sympathetic
parasympathetic
increased pancreatic juice
sympathetic
parasympathetic
Decreased pancreatic juice
parasympathetic
sympathetic
