foregut 
noun Anatomy & Zoology
The anterior part of the gut, towards the mouth.From the mouth, the esophagus leads to the foregut and then intestine, where digestion and absorption occur....
- Hemolymph flow rates to the mouthparts increased during feeding; perfusion of the foregut and hepatopancreas increased during digestion.
- The trachea is unbranched, and is formed by the division of the foregut by a longitudinal septum into two tubes - the trachea and the esophagus.
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