Plasma compartment: blood plasma
Interstitial compartment: bathing tissues & returning to blood
Intracellular fluid: inside cell
Uric acid is synthesized by the insect's tissues and released in soluble form
into the hemocoel.
The uric acid is absorbed by the Malpighian tubules and the low pH in the tubule lumen causes uric acid to precipitate out as dry matter.
Then waste is excreted with other solid waste through the anus of the grasshopper
Tubules secrete nitrogenous wastes and salts from the hemolymph; water follows the solutes by
osmosis.
Most of the water and salts are reabsorbed across the epithelium in the rectum
Dry product called frass is eliminated.
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