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Silkworm Digestive System Anatomy

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Questions and Answers

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?

Muscle layer

Endodermal layer

Epithelial layer (correct)

Tunica intima

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?

<p>Foregut</p> Signup and view all the answers

What is the composition of the muscle layer in the alimentary canal?

<p>Longitudinal and circular muscle layer</p> Signup and view all the answers

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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Description

Learn about the structure and anatomy of the digestive system of silkworms, including the composition of the alimentary canal and its protective layers. Explore the unique characteristics of the silkworm's digestive system.