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Questions and Answers
What is the function of the tunica intima in the alimentary canal?
What is the function of the tunica intima in the alimentary canal?
- Secreting chitinous layer
- Protecting the gut from the adversive action of food (correct)
- Aiding in the movement of food through the alimentary canal
- Serving digestive and absorptive functions
Which layer in the wall of the alimentary canal has gland cells interspersed in between columnar cells?
Which layer in the wall of the alimentary canal has gland cells interspersed in between columnar cells?
- Muscle layer
- Endodermal layer
- Epithelial layer (correct)
- Tunica intima
What is the function of the foregut in the alimentary canal?
What is the function of the foregut in the alimentary canal?
- Connects the mouth cavity with the oesophagus
- Includes mouth cavity, pharynx, Oesophagus, cardiac valve
- Receives and stores the food (correct)
- Composed of longitudinal and circular muscle layer
Which region of the alimentary canal is ectodermal in origin?
Which region of the alimentary canal is ectodermal in origin?
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What is the composition of the muscle layer in the alimentary canal?
What is the composition of the muscle layer in the alimentary canal?
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Study Notes
Layers of the Alimentary Canal
- The tunica intima is the innermost layer of the alimentary canal, responsible for absorption and secretion.
- The layer containing gland cells interspersed between columnar cells is the tunica mucosa.
Regions of the Alimentary Canal
- The foregut is the anterior region of the alimentary canal, responsible for ingestion and initial digestion.
- The region of ectodermal origin in the alimentary canal is the mouth and anterior part of the esophagus.
Muscle Layer Composition
- The muscle layer in the alimentary canal is composed of two sublayers: an inner circular layer and an outer longitudinal layer.
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