alimentary canal

n.
The mucous membrane-lined tube of the digestive system through which food passes, in which digestion takes place, and from which wastes are eliminated. It extends from the mouth to the anus and includes the pharynx, esophagus, stomach, and intestines. Also called digestive tract.

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gut

A tubular passage extending from the mouth to the anus (figure 5). It has regions specialized for ingestion (the mouth and buccal cavity), digestion (mainly the stomach and small intestine), absorption (mainly the small intestine for food and large intestine for water), and egestion (rectum and anus).

Figure 5 Alimentary canal

gut

The tubular passage extending from the mouth to the anus that has regions specialized for ingestion (mouth and buccal cavity), digestion (mainly stomach and small intestine), absorption (mainly the small intestine for food-stuffs and the large intestine for water), and egestion (rectum and anus).

Alimentary canal
(Click to enlarge)