Questions: From the most superficial (outermost layer) to the deepest, what is the correct order of layers of the gastrointestinal (GI) tract? Serosa, mucosa, submucosa, muscularis Serosa, muscularis, mucosa, submucosa Mucosa, serosa, submucosa, muscularis Mucosa, submucosa, muscularis, serosa Serosa, muscularis, submucosa, mucosa

From the most superficial (outermost layer) to the deepest, what is the correct order of layers of the gastrointestinal (GI) tract? Serosa, mucosa, submucosa, muscularis Serosa, muscularis, mucosa, submucosa Mucosa, serosa, submucosa, muscularis Mucosa, submucosa, muscularis, serosa Serosa, muscularis, submucosa, mucosa
Transcript text: From the most superficial (outermost layer) to the deepest, what is the correct order of layers of the gastrointestinal (GI) tract? Serosa, mucosa, submucosa, muscularis Serosa, muscularis, mucosa, submucosa Mucosa, serosa, submucosa, muscularis Mucosa, submucosa, muscularis, serosa Serosa, muscularis, submucosa, mucosa
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Solution

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The answer is the fourth one: Mucosa, submucosa, muscularis, serosa.

Explanation for each option:

  1. Serosa, mucosa, submucosa, muscularis: Incorrect. This order does not follow the correct sequence from outermost to innermost layers.

  2. Serosa, muscularis, mucosa, submucosa: Incorrect. This order is incorrect because the mucosa is the innermost layer, not between muscularis and submucosa.

  3. Mucosa, serosa, submucosa, muscularis: Incorrect. This order incorrectly places the serosa between mucosa and submucosa.

  4. Mucosa, submucosa, muscularis, serosa: Correct. This is the correct order of layers from the innermost to the outermost in the gastrointestinal tract.

  5. Serosa, muscularis, submucosa, mucosa: Incorrect. This order is reversed, starting from the outermost layer but incorrectly placing the layers in between.

In summary, the correct order of layers of the gastrointestinal (GI) tract from the innermost to the outermost is mucosa, submucosa, muscularis, and serosa.

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