Nokea
Match each term with the correct description: produces enzymes
- A. rectum
- B. esophagus
- C. pancreas
- D. liver
Correct Answer: C
Rationale: The pancreas produces digestive enzymes that aid in breaking down food.
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What is the role of mucus secreted by the stomach?
- A. To protect the lining of the stomach
- B. To digest fats
- C. To kill the germs in the food
- D. To digest the proteins
Correct Answer: A
Rationale: Mucus or Gastric mucus is a gel barrier secreted by epithelial cells & glandular cells in the stomach wall. It protects the inner lining of the stomach from HCl.
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.
Which substance destroy the harmful bacteria in stomach?
- A. Cerumin
- B. Chyme
- C. HCl
- D. Secretin
Correct Answer: C
Rationale: HCl in the stomach kills harmful bacteria ingested with food.
(Auerbach's) plexus found in:
- A. Muscularis externa
- B. Submucosa
- C. Mucosa
- D. Serosa
Correct Answer: A
Rationale: Auerbach's plexus is located between the circular and longitudinal layers of the muscularis externa, controlling gut motility.
About nasopharynx all true except:
- A. Lined by pseudostratified epith.
- B. Contain pharyngeal tonsil.
- C. Contain palatine tonsil
- D. Follow nasal cavity.
Correct Answer: C
Rationale: The nasopharynx is lined by pseudostratified ciliated epithelium and contains the pharyngeal tonsil (adenoids), but the palatine tonsils are located in the oropharynx, not the nasopharynx.