Nokea
Which of the following describes one function of the stomach?
- A. To introduce carbohydrates to food.
- B. To remove excess water from food.
- C. To temporarily store food.
- D. To absorb nutrients into the bloodstream.
Correct Answer: C
Rationale: The stomach temporarily stores food, mixing it with gastric juices for digestion.
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About soft palate, all true Except:
- A. Separates nasopharynx upwards from oropharynx downwards
- B. Superior surface covered by stratified columnar
- C. Stratified squamous non-keratinized epithelium on inferior surface
- D. Contain striated muscle with strong connective tissue between muscle bundles.
Correct Answer: B
Rationale: The superior surface of the soft palate is covered by pseudostratified ciliated columnar epithelium (respiratory epithelium), not stratified columnar, due to its proximity to the nasopharynx.
Amylase enzyme acts on starch and convert it into-
- A. Maltose
- B. Glucose
- C. Fructose
- D. Galactose
Correct Answer: A
Rationale: Amylase breaks down starch into maltose, a disaccharide.
Which of the following secretions is NOT produced by gastric glands?
- A. hydrochloric acid
- B. intrinsic factor
- C. pepsin
- D. sebum
Correct Answer: D
Rationale: Sebum is an oily substance produced by sebaceous glands in the skin, not by gastric glands, which secrete HCl, intrinsic factor, and pepsin.
Choose the answer which lists the correct order of the digestion process.
- A. A, C, D, B
- B. C, D, A, B
- C. C, A, D, B
- D. D, C, A, B
Correct Answer: B
Rationale: The correct order is: Food is ingested (C), digested (D), nutrients absorbed (A), and undigested food eliminated (B).
Into which tubes do the nephrons drain?
- A. Proximal convoluted tubule
- B. Collecting duct
- C. Distal convoluted
- D. Ureter
Correct Answer: B
Rationale: Nephrons drain into collecting ducts, which lead to the ureter.