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This digestive organ has three layers of skeletal muscle fibers oriented in three directions.

Number the structures of the alimentary canal from proximal to distal.  Begin with the most proximal structure as #1.

Which of the following correctly lists the tissue layers of the digestive tract from superficial to deep?

This junction lacks a sphincter

Absorption of which of the following nutrients would be affected the most if the liver were damaged?

The alimentary canal begins and ends with this type of epithelium.

All of the following are accessory organs of the digestive system except

Digestion and absorption of these nutrients require emulsification.

Which of the following is not a component of the immune system of the digestive tract

This visceral motor nerve of the autonomic nervous system stimulates digestive motility and secretion.