The midgut ( mesenteron ) is the largest organ in harvestmen and fills most of the opisthosoma.
2.
The mesenteron is not lined with cuticle but with rapidly dividing and therefore constantly replaced, epithelial cells.
3.
2 . "'Mesenteron "'( midgut ) : Digestive enzymes in this region are produced and secreted into the lumen and here nutrients are absorbed into the insect s body.
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