Buccal Cavity
The small intestine, specifically the jejunum is where most of the absorption occur.
Alimentary Canal
Digestive organs and the system in general can be divided into two parts: the accessory organs and the alimentary canal. The alimentary canal is the GI tract and the accessory organs are things like the teeth, tongue, salivary glands, and gallbladder.
The large intestine is the region of the alimentary canal that produces no digestive enzymes.
The alimentary canal or the gastrointestinal (GI) tract.
The digestive system
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DEAMINATION
These organs are part of the alimentary canal. The digestive system.
The pancreas and the liver are the body organs that are not part of the alimentary canal. The liver and the pancreas are the organs that are not part of the alimentary canal.
The alimentary canal is just the tube that goes from the mouth to the anus. The digestive system includes that tube but also all of the physiology that occurs along the tube and the accessory organs actions and products.