EXSS 276 FINAL EXAM QUESTIONS
WITH CORRECT ANSWERS
The pharynx has digestive as well as respiratory functions.
True
False - Answer-True
Which of the following statements is INCORRECT?
-The esophagus produces digestive enzymes.
-The esophageal mucosa consists of nonkeratinized stratified squamous epithelium.
-At each end of the esophagus, the muscularis forms two sphincters the upper
esophageal sphincter and the lower esophageal sphincter.
-The upper esophageal sphincter consists of skeletal muscle and the lower of smooth
muscle.
-The esophagus secretes mucus and transports food to the stomach. - Answer-The
esophagus produces digestive enzymes.
The upper esophageal sphincter regulates movement of food from the pharynx to the
esophagus while the lower esophageal sphincter regulates food movement from the
esophagus to the stomach.
True
False - Answer-True
Deglutition refers to the act of chewing food.
True
False - Answer-False
Moving a bolus to the back of the mouth by movement of the tongue backward and
against the palate constitutes which phase of swallowing?
voluntary
involuntary
cephalic
peristaltic - Answer-voluntary
Does peristalsis push or pull food along the digestive tract?
,push
pull - Answer-push
The epithelium of the esophagus mucosa consists of nonkeratinized stratified
squamous epithelium that affords considerable protection against abrasion and wear
and tear from food particles that are chewed, mixed with secretions and swallowed.
True
False - Answer-True
Which of the following statements is INCORRECT?
-Rugae are large folds of the stomach mucosa.
-Surface mucous cells and mucous neck cells secrete mucous which is protective in
function.
-Chief cells secrete pepsinogen and gastric lipase.
-Parietal cells secrete intrinsic factor and hydrochloric acid.
-G cells secrete cholecystokinin into the blood stream. - Answer-G cells secrete
cholecystokinin into the blood stream.
Pepsin is secreted in an inactive form to prevent it from digesting the fats in the cells
that produce it.
True
False - Answer-False
Gastric lipase and lingual lipase break down fats but are not as important as pancreatic
lipase.
True
False - Answer-True
The pancreatic duct unites with the common bile duct and enters the duodenum at the
_______.
accessory duct
insula of reil
haustra
hepatopancreatic ampulla
santorini ampulla - Answer-hepatopancreatic ampulla
Pancreatic acini are exocrine in nature while Islets of Langerhans are endocrine.
True
False - Answer-True
, Enzymes in pancreatic juice include:
-pancreatic amylase which digests starch
-the enzymes which digest protein: trypsin, chymotrypsin, carboxypeptidase and
elastase
-pancreatic lipase which digests fats and oil
-all of these - Answer-all of these
Which cell zones of a hepatic acinus are closest to the portal triad?
Zone 1
Zone 2
Zone 3
all answers are correct - Answer-Zone 1
Which of the following statements is correct?
The liver receives oxygenated blood from the hepatic artery and deoxygenated blood
from the hepatic portal vein. Branches of both veins carry blood into liver sinusoids.
Hepatocytes absorb oxygen, most of the nutrients, and some toxins. Needed
substances are secreted back into the blood. Blood then drains into the central vein and
into a hepatic vein.
The liver receives deoxygenated blood from the hepatic artery and oxygenated blood
from the hepatic portal vein. Branches of both veins carry blood into liver sinusoids.
Hepatocytes absorb oxygen, most of the nutrients, and some toxins. Needed
substances are secreted back into the blood. Blood then drains into the central vein and
into a hepatic vein.
The liver receives oxygenated blood from the hepatic artery and deoxygenated blood
from the hepatic portal vein. Branches of both veins carry blood into liver central vein -
Answer-The liver receives oxygenated blood from the hepatic artery and deoxygenated
blood from the hepatic portal vein. Branches of both veins carry blood into liver
sinusoids. Hepatocytes absorb oxygen, most of the nutrients, and some toxins. Needed
substances are secreted back into the blood. Blood then drains into the central vein and
into a hepatic vein.
The pancreatic duct and the common bile duct enter the duodenum at the
hepatopancreatic ampulla connecting the liver and gallbladder.
True
False - Answer-True
Bile formed in the liver is transported to the gall bladder for storage through which
pathway? (Some steps may be omitted)
WITH CORRECT ANSWERS
The pharynx has digestive as well as respiratory functions.
True
False - Answer-True
Which of the following statements is INCORRECT?
-The esophagus produces digestive enzymes.
-The esophageal mucosa consists of nonkeratinized stratified squamous epithelium.
-At each end of the esophagus, the muscularis forms two sphincters the upper
esophageal sphincter and the lower esophageal sphincter.
-The upper esophageal sphincter consists of skeletal muscle and the lower of smooth
muscle.
-The esophagus secretes mucus and transports food to the stomach. - Answer-The
esophagus produces digestive enzymes.
The upper esophageal sphincter regulates movement of food from the pharynx to the
esophagus while the lower esophageal sphincter regulates food movement from the
esophagus to the stomach.
True
False - Answer-True
Deglutition refers to the act of chewing food.
True
False - Answer-False
Moving a bolus to the back of the mouth by movement of the tongue backward and
against the palate constitutes which phase of swallowing?
voluntary
involuntary
cephalic
peristaltic - Answer-voluntary
Does peristalsis push or pull food along the digestive tract?
,push
pull - Answer-push
The epithelium of the esophagus mucosa consists of nonkeratinized stratified
squamous epithelium that affords considerable protection against abrasion and wear
and tear from food particles that are chewed, mixed with secretions and swallowed.
True
False - Answer-True
Which of the following statements is INCORRECT?
-Rugae are large folds of the stomach mucosa.
-Surface mucous cells and mucous neck cells secrete mucous which is protective in
function.
-Chief cells secrete pepsinogen and gastric lipase.
-Parietal cells secrete intrinsic factor and hydrochloric acid.
-G cells secrete cholecystokinin into the blood stream. - Answer-G cells secrete
cholecystokinin into the blood stream.
Pepsin is secreted in an inactive form to prevent it from digesting the fats in the cells
that produce it.
True
False - Answer-False
Gastric lipase and lingual lipase break down fats but are not as important as pancreatic
lipase.
True
False - Answer-True
The pancreatic duct unites with the common bile duct and enters the duodenum at the
_______.
accessory duct
insula of reil
haustra
hepatopancreatic ampulla
santorini ampulla - Answer-hepatopancreatic ampulla
Pancreatic acini are exocrine in nature while Islets of Langerhans are endocrine.
True
False - Answer-True
, Enzymes in pancreatic juice include:
-pancreatic amylase which digests starch
-the enzymes which digest protein: trypsin, chymotrypsin, carboxypeptidase and
elastase
-pancreatic lipase which digests fats and oil
-all of these - Answer-all of these
Which cell zones of a hepatic acinus are closest to the portal triad?
Zone 1
Zone 2
Zone 3
all answers are correct - Answer-Zone 1
Which of the following statements is correct?
The liver receives oxygenated blood from the hepatic artery and deoxygenated blood
from the hepatic portal vein. Branches of both veins carry blood into liver sinusoids.
Hepatocytes absorb oxygen, most of the nutrients, and some toxins. Needed
substances are secreted back into the blood. Blood then drains into the central vein and
into a hepatic vein.
The liver receives deoxygenated blood from the hepatic artery and oxygenated blood
from the hepatic portal vein. Branches of both veins carry blood into liver sinusoids.
Hepatocytes absorb oxygen, most of the nutrients, and some toxins. Needed
substances are secreted back into the blood. Blood then drains into the central vein and
into a hepatic vein.
The liver receives oxygenated blood from the hepatic artery and deoxygenated blood
from the hepatic portal vein. Branches of both veins carry blood into liver central vein -
Answer-The liver receives oxygenated blood from the hepatic artery and deoxygenated
blood from the hepatic portal vein. Branches of both veins carry blood into liver
sinusoids. Hepatocytes absorb oxygen, most of the nutrients, and some toxins. Needed
substances are secreted back into the blood. Blood then drains into the central vein and
into a hepatic vein.
The pancreatic duct and the common bile duct enter the duodenum at the
hepatopancreatic ampulla connecting the liver and gallbladder.
True
False - Answer-True
Bile formed in the liver is transported to the gall bladder for storage through which
pathway? (Some steps may be omitted)
