Digestive System Overview · Physiology

Which layer of the gastrointestinal tract contains blood vessels and nerves?

  1. Mucosa
  2. Submucosa
  3. Muscularis externa
  4. Serosa
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Correct answer: Submucosa

The submucosa contains blood vessels, lymphatics, and the submucosal nerve plexus. It supports the mucosal layer.

Difficulty: Medium Question 11 of 39

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