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Identify the structure labeled "d."
A) Muscularis externa
B) Submucosa
C) Serosa
D) Mucosa
Muscularis Externa
The layer of muscle in the gastrointestinal tract wall that is responsible for gut movement through peristalsis.
Serosa
A smooth membrane consisting of a thin layer of cells that secrete serous fluid, lining the outer surface of internal organs and body cavities.
Mucosa
The moist, inner lining of some organs and body cavities, such as the nose, mouth, lungs, and stomach, involved in absorption and secretion.
- Recognize the layers of the alimentary canal and their histological characteristics.
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Learning Objectives
- Recognize the layers of the alimentary canal and their histological characteristics.
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