Nokea
(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.
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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.
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.
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.
Which type of fat can cause heart disease if consumed in high quantities?
- A. carbohydrates
- B. saturated
- C. calories
- D. unsaturated
Correct Answer: B
Rationale: Saturated fats, when consumed excessively, can increase cholesterol levels, leading to heart disease.
If a patient is experiencing an intensified sympathetic response, listening to the bowel sounds during auscultation would most likely reveal:
- A. An increase in both the rate and intensity of the bowel sounds
- B. An increase in the rate of bowel sounds accompanied by a decrease in intensity
- C. A decrease in both the rate and intensity of the bowel sounds
- D. Bowel sounds with a normal rate and intensity
Correct Answer: C
Rationale: Sympathetic activation inhibits GI motility (fight-or-flight response), reducing bowel sound rate and intensity.