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Esophagus — Gastrointestinal Histology

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Esophagus
Gastrointestinal Histology · Esophagus · medium
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Esophagus MCQs: practice questions

Sample Esophagus multiple-choice questions from Gastrointestinal Histology.

  1. Which plexus is located in the submucosa of the alimentary canal?

    • A. Auerbach plexus
    • B. Celiac ganglion
    • C. Meissner plexus
    • D. Substantia nigra
    • E. Pyramidal tract
  2. Which portion of the esophageal muscularis externa contains only skeletal muscle?

    • A. Middle third
    • B. Lower third
    • C. Entire esophagus
    • D. Upper third
    • E. None
  3. What is the muscularis mucosae of the esophagus composed of?

    • A. Three layers of skeletal muscle
    • B. A single longitudinal layer of smooth muscle
    • C. Circular skeletal muscle only
    • D. Cardiac muscle
    • E. Elastic cartilage
  4. Which esophageal gland is located in the lamina propria rather than the submucosa?

    • A. Esophageal cardiac gland
    • B. Esophageal gland proper
    • C. Brunner gland
    • D. Paneth gland
    • E. Gastric gland
  5. Which statement best describes the esophageal mucosa?

    • A. Simple columnar epithelium with villi
    • B. Stratified squamous nonkeratinized epithelium, lamina propria, and muscularis mucosae
    • C. Pseudostratified ciliated epithelium with cartilage
    • D. Simple squamous epithelium with alveoli
    • E. Transitional epithelium with renal tubules
  6. The smooth muscle of the lower esophagus is controlled mainly by:

  7. Which function is performed by esophageal muscularis externa?

  8. Which layer of the esophageal wall contains esophageal glands proper?

  9. Which alimentary-canal layer houses glands in the esophagus but not generally in the stomach submucosa?

  10. Which two physiological sphincters help maintain one-way movement through the esophagus?

  11. Why is the esophageal muscularis externa unusual within the alimentary canal?

  12. Which portion of the esophageal muscularis externa contains only smooth muscle?

  13. A lesion damages the upper third of the esophageal muscularis externa. Which muscle type is most affected?

  14. A lesion damages the lower third of the esophageal muscularis externa. Which muscle type is most affected?

  15. Which esophageal layer lies immediately deep to the epithelium?

  16. What is the principal role of mucus from esophageal glands?

  17. Which epithelium lines the esophagus?

  18. Which type of connective tissue predominates in the esophageal submucosa?

  19. Which plexus lies between the layers of muscularis externa?

  20. Which portion of the esophageal muscularis externa contains both skeletal and smooth muscle?

  21. A section shows a thick stratified squamous nonkeratinized mucosa and a muscular wall that changes from skeletal to smooth muscle distally. Which organ is this?

  22. Which nerve controls the striated muscle of the esophageal muscularis externa according to BRS?

  23. Which layer contains dense connective tissue and the esophageal glands proper?

  24. Which glands are found in the lamina propria of the esophagus?

  25. Which epithelial feature protects the esophagus from mechanical abrasion?

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