Nokea
Absorption of digested food chiefly occurs in-
- A. Stomach
- B. Colon
- C. Small Intestine
- D. Large Intestine
Correct Answer: C
Rationale: The small intestine is the main site for nutrient absorption.
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Which listed substances are all broken down by the liver?
- A. alcohol, drugs, and progesterone
- B. drugs, adrenaline, and urea
- C. oestrogen, water, and drugs
- D. urea, alcohol, and drugs
Correct Answer: D
Rationale: The liver metabolizes various substances including urea, alcohol, and drugs.
What is the main role of the hepatic portal system?
- A. Regulating blood glucose levels through the release of insulin
- B. Supplying oxygen to the liver for metabolic processes
- C. Eliminating toxins from the bloodstream
- D. Filtering and processing nutrients absorbed from the gastrointestinal tract
Correct Answer: D
Rationale: The hepatic portal system transports nutrient-rich blood from the GI tract to the liver for processing and detoxification before entering systemic circulation.
Centro acinar cells, all true except:
- A. Beginning of pancreatic duct system.
- B. Secrete bicarbonate ion (with intercalated ducts)
- C. Its secretion is controlled by secretin hormone
- D. Beginning of biliary duct system
Correct Answer: D
Rationale: Centroacinar cells are part of the pancreatic exocrine duct system, not the biliary system, which involves bile ducts.
Enzyme maltase in human gut acts on food at a pH of -
- A. More than 7 to change starch into maltose.
- B. Less than 7 to change starch into maltose.
- C. More than 7 to change maltose into glucose.
- D. Less than 7 to change maltose into glucose.
Correct Answer: C
Rationale: Maltase works in the small intestine (pH > 7) to convert maltose into glucose.
Dental formula of adult human is -
- A. 2123/2123
- B. 2123/2122
- C. 2124/2124
- D. 2132/2132
Correct Answer: D
Rationale: The dental formula of an adult human is 2132/2132, representing 2 incisors, 1 canine, 3 premolars, and 2 molars per quadrant.