foregut
Quick Summary
The foregut is the anterior section of the digestive tract. In vertebrate embryos, it develops into the pharynx, esophagus, stomach, and the beginning of the intestine. In some invertebrates, like malacostracans, the foregut is a two-chambered structure that includes the mouth, esophagus, and a muscular stomach often equipped with a "gastric mill" for grinding food. This mill can have bristles, teeth, or filtering setae, depending on the species' diet and feeding habits. The foregut plays a crucial role in initial food processing before it moves to the midgut for further digestion and absorption.1234
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