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Hepatocytes do NOT

A.

store fat-soluble vitamins

B.

detoxify toxic chemicals

C.

process nutrients

D.

produce digestive enzymes

Answer and Explanation

The Correct Answer is D

A. Store fat-soluble vitamins: Hepatocytes store vitamins A, D, E, and K.
B. Detoxify toxic chemicals: Hepatocytes metabolize and detoxify substances like drugs and alcohol.
C. Process nutrients: They metabolize carbohydrates, lipids, and proteins, modifying absorbed nutrients.
D. Produce digestive enzymes: Hepatocytes do not produce digestive enzymes; that is the role of the pancreas and other gastrointestinal organs.


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Related Questions

Correct Answer is {"dropdown-group-1":"B"}

Explanation

A. Cephalic: The cephalic phase occurs before food enters the stomach, triggered by sight, smell, or thought of food, and stimulates gastric secretion via the vagus nerve.
B. Gastric: The gastric phase begins when food enters and stretches the stomach, triggering myenteric and vagovagal reflexes that stimulate acid and enzyme secretion.
C. Intestinal: The intestinal phase involves chyme entering the duodenum, which moderates gastric activity, mostly inhibitory.
D. Gastrointestinal: “Gastrointestinal” is a general term and not one of the specific phases of gastric secretion.
E. Mesenteric: “Mesenteric” refers to the mesentery (tissue supporting the intestines), not a phase of digestion.

Correct Answer is A

Explanation

A. Nitrogen: Nitrogen is a gas and a component of proteins and nucleic acids, but it does not function as a buffer system in the body.
B. Bicarbonate: The bicarbonate buffer system is the primary buffer system in the extracellular fluid, regulating blood pH.
C. Phosphate: The phosphate buffer system operates mainly in the intracellular fluid and renal tubules.
D. Protein: Proteins, especially hemoglobin, act as buffers by binding or releasing hydrogen ions.

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