Nokea
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.
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Concerning Circumvallate papilla the following is true EXCEPT:
- A. Most numerous type of the lingual papillae.
- B. Its sides carry about 250 taste buds.
- C. Has underlying Von Ebner's glands.
- D. Surrounded by circular groove.
Correct Answer: A
Rationale: Circumvallate papillae are the least numerous (about 8-12 in humans), not the most numerous, and they carry many taste buds with Von Ebner's glands.
Exocrine portion of pancreas show the following EXCEPT:
- A. Formed of pure serous acini with centroacinar cells
- B. Its duct system is rich in striated ducts
- C. Secretion of bicarbonate is stimulated by secretin hormone.
- D. Secretion of enzymes is stimulated by cholecystokinin
Correct Answer: B
Rationale: The pancreatic duct system has intercalated ducts, not striated ducts, which are characteristic of salivary glands.
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.
What additional role does the pancreas play?
- A. Regulates blood sugar
- B. Produces bile
- C. Stores vitamins
- D. Secretes mucus
Correct Answer: A
Rationale: The pancreas has an endocrine role, releasing insulin and glucagon to regulate blood sugar.
Enteroendocrine cells of stomach, show the following EXCEPT:
- A. Stained with silver nitrate or chromium salts.
- B. Have apical secretory granules.
- C. Divided into open type & closed type.
- D. Are also called argentaffin cells.
Correct Answer: B
Rationale: Enteroendocrine cells have basal secretory granules, not apical, as they release hormones into the bloodstream.