Nokea
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.
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Having reduced amounts of Anti Diuretic hormone does what:
- A. Decrease urine production making it dark in colour
- B. Makes us lose water by increased sweating
- C. Increase urine production making it insipid
- D. Causes water retention in tissues
Correct Answer: C
Rationale: Reduced ADH increases urine output, making it dilute (insipid) due to less water reabsorption.
Which part of the digestion process speeds up the break down of food?
- A. enzymes
- B. peristalsis
- C. villi
- D. bile
Correct Answer: A
Rationale: Enzymes are biological catalysts that accelerate the chemical breakdown of food.
Amylase is an example of a(n)
- A. accessory organ
- B. carbohydrate
- C. enzyme
- D. vitamin
Correct Answer: C
Rationale: Amylase is an enzyme that breaks down starches into sugars.
Teeth adapted to shear food are:
- A. premolars
- B. canines
- C. incisors
- D. molars
Correct Answer: C
Rationale: Incisors are sharp-edged teeth designed for cutting or shearing food.
Substances which are not related with hepatic portal circulation :-
- A. Amino acid
- B. Fatty acid
- C. Glucose
- D. Electrolytes
Correct Answer: B
Rationale: Fatty acids are absorbed into lacteals and enter the lymphatic system, not the hepatic portal vein.