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Question 1
A nurse is teaching a group of students about the liver. Which statement by a
student indicates correct understanding of the liver's primary digestive
function?
A. "The liver stores bile until it is needed."
B. "The liver produces bile to aid in fat digestion."
C. "The liver produces insulin to regulate blood glucose."
D. "The liver filters blood cells from circulation."
Correct Answer:
B. The liver produces bile to aid in fat digestion.
Rationale
The liver is the largest internal organ and performs over 500 vital functions. One
of its most important digestive roles is the production of bile.
Bile:
• Emulsifies fats into smaller droplets.
• Increases the surface area for pancreatic lipase.
, • Enhances digestion and absorption of fat-soluble vitamins (A, D, E, and K).
The liver is primarily located in the right upper quadrant (RUQ) beneath the
diaphragm.
Why the Other Answers Are Incorrect
A. The gallbladder—not the liver—stores bile.
C. Insulin is produced by the pancreas.
D. The spleen primarily removes damaged blood cells.
Clinical Pearl
Patients with liver disease often have impaired bile production, resulting in fat
malabsorption, steatorrhea (fatty stools), and deficiencies of fat-soluble
vitamins.
Question 2
A patient has undergone removal of the gallbladder. Which statement by the
nurse is most accurate?
A. "Your liver will stop producing bile."
B. "Bile will now flow directly from the liver into the small intestine."
C. "You will no longer be able to digest fats."
D. "Insulin production will decrease."
Correct Answer:
B. Bile will now flow directly from the liver into the small intestine.
Rationale
The gallbladder does not produce bile.
Its functions are to:
• Store bile
• Concentrate bile
• Release bile into the duodenum after fatty meals
After a cholecystectomy, bile continuously flows from the liver into the intestine.
,Why the Other Answers Are Incorrect
A. The liver continues to produce bile.
C. Fat digestion still occurs, although very fatty meals may initially be harder to
tolerate.
D. Insulin production is unrelated to the gallbladder.
Clinical Pearl
Patients recovering from gallbladder removal are often advised to eat smaller,
lower-fat meals until digestion adapts.
Question 3
Which hormone produced by the pancreas is primarily responsible for lowering
blood glucose?
A. Glucagon
B. Cortisol
C. Insulin
D. Epinephrine
Correct Answer:
C. Insulin
Rationale
The pancreas has both endocrine and exocrine functions.
Its endocrine cells produce:
• Insulin → lowers blood glucose by promoting glucose uptake into cells.
• Glucagon → raises blood glucose by stimulating glycogen breakdown.
Why the Other Answers Are Incorrect
A. Glucagon raises blood glucose.
B. Cortisol is produced by the adrenal cortex.
D. Epinephrine is produced by the adrenal medulla.
Clinical Pearl
, Diabetes mellitus results from inadequate insulin production, impaired insulin
action, or both.
Question 4
A nurse explains that the spleen is commonly referred to as the "blood cell
graveyard." Why?
A. It stores bile.
B. It removes old and damaged red blood cells from circulation.
C. It produces insulin.
D. It filters urine.
Correct Answer:
B. It removes old and damaged red blood cells from circulation.
Rationale
The spleen:
• Removes aged or damaged erythrocytes.
• Stores platelets.
• Produces lymphocytes.
• Serves as an important immune organ.
Because it destroys worn-out blood cells, it is commonly called the blood cell
graveyard.
Why the Other Answers Are Incorrect
A. Gallbladder stores bile.
C. Pancreas produces insulin.
D. Kidneys filter urine.
Clinical Pearl
Patients without a spleen (splenectomy) are at increased risk for severe
infections from encapsulated bacteria and require appropriate vaccinations.